Home / 1,265,544,187.20-1,898,316,280.80-538,438,420.80

Finding the Fourth Proportional to 1,265,544,187.20, 1,898,316,280.80 and 538,438,420.80

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Solution

The fourth proportional to 1,265,544,187.20, 1,898,316,280.80 and 538,438,420.80 is: 807,657,631.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,265,544,187.20 : 1,898,316,280.80 = 538,438,420.80 : x
  2. Step 2: Convert to fraction form
    1,265,544,187.20/1,898,316,280.80 = 538,438,420.80/x
  3. Step 3: Cross multiply
    1,265,544,187.20x = 1,898,316,280.80 × 538,438,420.80
  4. Step 4: Simplify right side
    1,265,544,187.20x = 1,022,126,420,412,881,280
  5. Step 5: Solve for x
    x = 1,022,126,420,412,881,280/1,265,544,187.20
  6. Step 6: Final answer
    x = 807,657,631.20

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Double scale
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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.