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Finding the Fourth Proportional to 787,968,019.20, 1,181,952,028.80 and 497,730,374.40

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Solution

The fourth proportional to 787,968,019.20, 1,181,952,028.80 and 497,730,374.40 is: 746,595,561.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    787,968,019.20 : 1,181,952,028.80 = 497,730,374.40 : x
  2. Step 2: Convert to fraction form
    787,968,019.20/1,181,952,028.80 = 497,730,374.40/x
  3. Step 3: Cross multiply
    787,968,019.20x = 1,181,952,028.80 × 497,730,374.40
  4. Step 4: Simplify right side
    787,968,019.20x = 588,293,425,817,463,552
  5. Step 5: Solve for x
    x = 588,293,425,817,463,552/787,968,019.20
  6. Step 6: Final answer
    x = 746,595,561.60

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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.