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Finding the Fourth Proportional to 585,040.30, 877,560.45 and 285,712.90

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Solution

The fourth proportional to 585,040.30, 877,560.45 and 285,712.90 is: 428,569.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    585,040.30 : 877,560.45 = 285,712.90 : x
  2. Step 2: Convert to fraction form
    585,040.30/877,560.45 = 285,712.90/x
  3. Step 3: Cross multiply
    585,040.30x = 877,560.45 × 285,712.90
  4. Step 4: Simplify right side
    585,040.30x = 250,730,341,094.81
  5. Step 5: Solve for x
    x = 250,730,341,094.81/585,040.30
  6. Step 6: Final answer
    x = 428,569.35

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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 (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.