Home / 915,403,697.28-1,263,242,219.76-497,726,500.68

Finding the Fourth Proportional to 915,403,697.28, 1,263,242,219.76 and 497,726,500.68

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Solution

The fourth proportional to 915,403,697.28, 1,263,242,219.76 and 497,726,500.68 is: 686,854,478.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    915,403,697.28 : 1,263,242,219.76 = 497,726,500.68 : x
  2. Step 2: Convert to fraction form
    915,403,697.28/1,263,242,219.76 = 497,726,500.68/x
  3. Step 3: Cross multiply
    915,403,697.28x = 1,263,242,219.76 × 497,726,500.68
  4. Step 4: Simplify right side
    915,403,697.28x = 628,749,129,552,380,416
  5. Step 5: Solve for x
    x = 628,749,129,552,380,416/915,403,697.28
  6. Step 6: Final answer
    x = 686,854,478.98

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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.