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Finding the Fourth Proportional to 719,512.72, 993,057.56 and 429,142.92

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Solution

The fourth proportional to 719,512.72, 993,057.56 and 429,142.92 is: 592,294.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    719,512.72 : 993,057.56 = 429,142.92 : x
  2. Step 2: Convert to fraction form
    719,512.72/993,057.56 = 429,142.92/x
  3. Step 3: Cross multiply
    719,512.72x = 993,057.56 × 429,142.92
  4. Step 4: Simplify right side
    719,512.72x = 426,163,621,026.48
  5. Step 5: Solve for x
    x = 426,163,621,026.48/719,512.72
  6. Step 6: Final answer
    x = 592,294.77

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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.