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Finding the Fourth Proportional to 663,369,861.68, 915,478,094.40 and 366,031,389.92

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Solution

The fourth proportional to 663,369,861.68, 915,478,094.40 and 366,031,389.92 is: 505,138,594.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    663,369,861.68 : 915,478,094.40 = 366,031,389.92 : x
  2. Step 2: Convert to fraction form
    663,369,861.68/915,478,094.40 = 366,031,389.92/x
  3. Step 3: Cross multiply
    663,369,861.68x = 915,478,094.40 × 366,031,389.92
  4. Step 4: Simplify right side
    663,369,861.68x = 335,093,719,334,544,960
  5. Step 5: Solve for x
    x = 335,093,719,334,544,960/663,369,861.68
  6. Step 6: Final answer
    x = 505,138,594.16

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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.