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Finding the Fourth Proportional to 623,909.60, 935,864.40 and 340,474.40

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Solution

The fourth proportional to 623,909.60, 935,864.40 and 340,474.40 is: 510,711.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    623,909.60 : 935,864.40 = 340,474.40 : x
  2. Step 2: Convert to fraction form
    623,909.60/935,864.40 = 340,474.40/x
  3. Step 3: Cross multiply
    623,909.60x = 935,864.40 × 340,474.40
  4. Step 4: Simplify right side
    623,909.60x = 318,637,870,071.36
  5. Step 5: Solve for x
    x = 318,637,870,071.36/623,909.60
  6. Step 6: Final answer
    x = 510,711.60

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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.