Home / 900,435,001.72-1,242,639,138.12-498,548,748.24

Finding the Fourth Proportional to 900,435,001.72, 1,242,639,138.12 and 498,548,748.24

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Solution

The fourth proportional to 900,435,001.72, 1,242,639,138.12 and 498,548,748.24 is: 688,018,774.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    900,435,001.72 : 1,242,639,138.12 = 498,548,748.24 : x
  2. Step 2: Convert to fraction form
    900,435,001.72/1,242,639,138.12 = 498,548,748.24/x
  3. Step 3: Cross multiply
    900,435,001.72x = 1,242,639,138.12 × 498,548,748.24
  4. Step 4: Simplify right side
    900,435,001.72x = 619,516,186,823,758,464
  5. Step 5: Solve for x
    x = 619,516,186,823,758,464/900,435,001.72
  6. Step 6: Final answer
    x = 688,018,774.97

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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.