Home / 820,399,915.01-1,132,151,937.95-449,121,946.39

Finding the Fourth Proportional to 820,399,915.01, 1,132,151,937.95 and 449,121,946.39

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Solution

The fourth proportional to 820,399,915.01, 1,132,151,937.95 and 449,121,946.39 is: 619,788,316.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    820,399,915.01 : 1,132,151,937.95 = 449,121,946.39 : x
  2. Step 2: Convert to fraction form
    820,399,915.01/1,132,151,937.95 = 449,121,946.39/x
  3. Step 3: Cross multiply
    820,399,915.01x = 1,132,151,937.95 × 449,121,946.39
  4. Step 4: Simplify right side
    820,399,915.01x = 508,474,281,981,314,496
  5. Step 5: Solve for x
    x = 508,474,281,981,314,496/820,399,915.01
  6. Step 6: Final answer
    x = 619,788,316.26

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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.