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Finding the Fourth Proportional to 472,802.60, 708,426.30 and 393,487.40

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Solution

The fourth proportional to 472,802.60, 708,426.30 and 393,487.40 is: 589,583.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    472,802.60 : 708,426.30 = 393,487.40 : x
  2. Step 2: Convert to fraction form
    472,802.60/708,426.30 = 393,487.40/x
  3. Step 3: Cross multiply
    472,802.60x = 708,426.30 × 393,487.40
  4. Step 4: Simplify right side
    472,802.60x = 278,756,822,878.62
  5. Step 5: Solve for x
    x = 278,756,822,878.62/472,802.60
  6. Step 6: Final answer
    x = 589,583.95

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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.