Home / 1,439,601,482.78-1,986,649,562.10-779,551,760.78

Finding the Fourth Proportional to 1,439,601,482.78, 1,986,649,562.10 and 779,551,760.78

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Solution

The fourth proportional to 1,439,601,482.78, 1,986,649,562.10 and 779,551,760.78 is: 1,075,781,167.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,439,601,482.78 : 1,986,649,562.10 = 779,551,760.78 : x
  2. Step 2: Convert to fraction form
    1,439,601,482.78/1,986,649,562.10 = 779,551,760.78/x
  3. Step 3: Cross multiply
    1,439,601,482.78x = 1,986,649,562.10 × 779,551,760.78
  4. Step 4: Simplify right side
    1,439,601,482.78x = 1,548,696,164,187,870,720
  5. Step 5: Solve for x
    x = 1,548,696,164,187,870,720/1,439,601,482.78
  6. Step 6: Final answer
    x = 1,075,781,167.71

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Double scale
Find fourth proportional to 1,439,601,483.78, 1,986,649,563.48 and 779,551,761.78
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.