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Finding the Fourth Proportional to 611,875.60, 917,230.20 and 476,864.80

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Solution

The fourth proportional to 611,875.60, 917,230.20 and 476,864.80 is: 714,842.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    611,875.60 : 917,230.20 = 476,864.80 : x
  2. Step 2: Convert to fraction form
    611,875.60/917,230.20 = 476,864.80/x
  3. Step 3: Cross multiply
    611,875.60x = 917,230.20 × 476,864.80
  4. Step 4: Simplify right side
    611,875.60x = 437,394,795,876.96
  5. Step 5: Solve for x
    x = 437,394,795,876.96/611,875.60
  6. Step 6: Final answer
    x = 714,842.68

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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.