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Finding the Fourth Proportional to 875,398.89, 1,208,050.45 and 472,990.89

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Solution

The fourth proportional to 875,398.89, 1,208,050.45 and 472,990.89 is: 652,727.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    875,398.89 : 1,208,050.45 = 472,990.89 : x
  2. Step 2: Convert to fraction form
    875,398.89/1,208,050.45 = 472,990.89/x
  3. Step 3: Cross multiply
    875,398.89x = 1,208,050.45 × 472,990.89
  4. Step 4: Simplify right side
    875,398.89x = 571,396,857,510.40
  5. Step 5: Solve for x
    x = 571,396,857,510.40/875,398.89
  6. Step 6: Final answer
    x = 652,727.42

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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.