Home / 499,318,641.20-748,977,961.80-438,852,465.20

Finding the Fourth Proportional to 499,318,641.20, 748,977,961.80 and 438,852,465.20

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Solution

The fourth proportional to 499,318,641.20, 748,977,961.80 and 438,852,465.20 is: 658,278,697.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    499,318,641.20 : 748,977,961.80 = 438,852,465.20 : x
  2. Step 2: Convert to fraction form
    499,318,641.20/748,977,961.80 = 438,852,465.20/x
  3. Step 3: Cross multiply
    499,318,641.20x = 748,977,961.80 × 438,852,465.20
  4. Step 4: Simplify right side
    499,318,641.20x = 328,690,824,916,401,408
  5. Step 5: Solve for x
    x = 328,690,824,916,401,408/499,318,641.20
  6. Step 6: Final answer
    x = 658,278,697.80

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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.