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Finding the Fourth Proportional to 487,374.30, 731,061.45 and 369,276.30

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Solution

The fourth proportional to 487,374.30, 731,061.45 and 369,276.30 is: 553,914.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,374.30 : 731,061.45 = 369,276.30 : x
  2. Step 2: Convert to fraction form
    487,374.30/731,061.45 = 369,276.30/x
  3. Step 3: Cross multiply
    487,374.30x = 731,061.45 × 369,276.30
  4. Step 4: Simplify right side
    487,374.30x = 269,963,667,328.64
  5. Step 5: Solve for x
    x = 269,963,667,328.64/487,374.30
  6. Step 6: Final answer
    x = 553,914.45

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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.