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Finding the Fourth Proportional to 817,992.98, 1,128,538.15 and 473,640.92

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Solution

The fourth proportional to 817,992.98, 1,128,538.15 and 473,640.92 is: 653,455.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    817,992.98 : 1,128,538.15 = 473,640.92 : x
  2. Step 2: Convert to fraction form
    817,992.98/1,128,538.15 = 473,640.92/x
  3. Step 3: Cross multiply
    817,992.98x = 1,128,538.15 × 473,640.92
  4. Step 4: Simplify right side
    817,992.98x = 534,521,849,258.34
  5. Step 5: Solve for x
    x = 534,521,849,258.34/817,992.98
  6. Step 6: Final answer
    x = 653,455.30

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Half scale
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Double scale
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Similar ratio
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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.