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Finding the Fourth Proportional to 417,721.60, 626,582.40 and 291,750.40

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Solution

The fourth proportional to 417,721.60, 626,582.40 and 291,750.40 is: 437,625.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    417,721.60 : 626,582.40 = 291,750.40 : x
  2. Step 2: Convert to fraction form
    417,721.60/626,582.40 = 291,750.40/x
  3. Step 3: Cross multiply
    417,721.60x = 626,582.40 × 291,750.40
  4. Step 4: Simplify right side
    417,721.60x = 182,805,665,832.96
  5. Step 5: Solve for x
    x = 182,805,665,832.96/417,721.60
  6. Step 6: Final answer
    x = 437,625.60

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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.