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Finding the Fourth Proportional to 672,933.60, 928,622.70 and 371,127.60

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Solution

The fourth proportional to 672,933.60, 928,622.70 and 371,127.60 is: 512,141.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    672,933.60 : 928,622.70 = 371,127.60 : x
  2. Step 2: Convert to fraction form
    672,933.60/928,622.70 = 371,127.60/x
  3. Step 3: Cross multiply
    672,933.60x = 928,622.70 × 371,127.60
  4. Step 4: Simplify right side
    672,933.60x = 344,637,513,956.52
  5. Step 5: Solve for x
    x = 344,637,513,956.52/672,933.60
  6. Step 6: Final answer
    x = 512,141.93

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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.