Home / 1,139,872,525.74-1,573,027,113.69-618,351,757.74

Finding the Fourth Proportional to 1,139,872,525.74, 1,573,027,113.69 and 618,351,757.74

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Solution

The fourth proportional to 1,139,872,525.74, 1,573,027,113.69 and 618,351,757.74 is: 853,327,068.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,139,872,525.74 : 1,573,027,113.69 = 618,351,757.74 : x
  2. Step 2: Convert to fraction form
    1,139,872,525.74/1,573,027,113.69 = 618,351,757.74/x
  3. Step 3: Cross multiply
    1,139,872,525.74x = 1,573,027,113.69 × 618,351,757.74
  4. Step 4: Simplify right side
    1,139,872,525.74x = 972,684,080,722,890,368
  5. Step 5: Solve for x
    x = 972,684,080,722,890,368/1,139,872,525.74
  6. Step 6: Final answer
    x = 853,327,068.39

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Double scale
Find fourth proportional to 1,139,872,526.74, 1,573,027,115.07 and 618,351,758.74
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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.