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Finding the Fourth Proportional to 719,141.16, 992,510.10 and 432,820.20

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Solution

The fourth proportional to 719,141.16, 992,510.10 and 432,820.20 is: 597,349.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    719,141.16 : 992,510.10 = 432,820.20 : x
  2. Step 2: Convert to fraction form
    719,141.16/992,510.10 = 432,820.20/x
  3. Step 3: Cross multiply
    719,141.16x = 992,510.10 × 432,820.20
  4. Step 4: Simplify right side
    719,141.16x = 429,578,419,984.02
  5. Step 5: Solve for x
    x = 429,578,419,984.02/719,141.16
  6. Step 6: Final answer
    x = 597,349.23

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Double scale
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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.