Home / 1,155,418,923.40-1,732,023,693.90-428,212,625.80

Finding the Fourth Proportional to 1,155,418,923.40, 1,732,023,693.90 and 428,212,625.80

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Solution

The fourth proportional to 1,155,418,923.40, 1,732,023,693.90 and 428,212,625.80 is: 641,909,526.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,155,418,923.40 : 1,732,023,693.90 = 428,212,625.80 : x
  2. Step 2: Convert to fraction form
    1,155,418,923.40/1,732,023,693.90 = 428,212,625.80/x
  3. Step 3: Cross multiply
    1,155,418,923.40x = 1,732,023,693.90 × 428,212,625.80
  4. Step 4: Simplify right side
    1,155,418,923.40x = 741,674,413,912,734,464
  5. Step 5: Solve for x
    x = 741,674,413,912,734,464/1,155,418,923.40
  6. Step 6: Final answer
    x = 641,909,526.40

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Double scale
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1.5x scale

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.