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Finding the Fourth Proportional to 868,280.60, 1,302,248.10 and 419,000.60

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Solution

The fourth proportional to 868,280.60, 1,302,248.10 and 419,000.60 is: 628,417.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    868,280.60 : 1,302,248.10 = 419,000.60 : x
  2. Step 2: Convert to fraction form
    868,280.60/1,302,248.10 = 419,000.60/x
  3. Step 3: Cross multiply
    868,280.60x = 1,302,248.10 × 419,000.60
  4. Step 4: Simplify right side
    868,280.60x = 545,642,735,248.86
  5. Step 5: Solve for x
    x = 545,642,735,248.86/868,280.60
  6. Step 6: Final answer
    x = 628,417.51

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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.