Home / 820,428.61-1,132,248.32-457,923.19

Finding the Fourth Proportional to 820,428.61, 1,132,248.32 and 457,923.19

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Solution

The fourth proportional to 820,428.61, 1,132,248.32 and 457,923.19 is: 631,965.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    820,428.61 : 1,132,248.32 = 457,923.19 : x
  2. Step 2: Convert to fraction form
    820,428.61/1,132,248.32 = 457,923.19/x
  3. Step 3: Cross multiply
    820,428.61x = 1,132,248.32 × 457,923.19
  4. Step 4: Simplify right side
    820,428.61x = 518,482,760,276.93
  5. Step 5: Solve for x
    x = 518,482,760,276.93/820,428.61
  6. Step 6: Final answer
    x = 631,965.72

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Half scale
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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.