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Finding the Fourth Proportional to 763,012.62, 1,053,006.64 and 423,480.88

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Solution

The fourth proportional to 763,012.62, 1,053,006.64 and 423,480.88 is: 584,430.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    763,012.62 : 1,053,006.64 = 423,480.88 : x
  2. Step 2: Convert to fraction form
    763,012.62/1,053,006.64 = 423,480.88/x
  3. Step 3: Cross multiply
    763,012.62x = 1,053,006.64 × 423,480.88
  4. Step 4: Simplify right side
    763,012.62x = 445,928,178,553.04
  5. Step 5: Solve for x
    x = 445,928,178,553.04/763,012.62
  6. Step 6: Final answer
    x = 584,430.93

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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.