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Finding the Fourth Proportional to 614,578.60, 921,867.90 and 402,002.20

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Solution

The fourth proportional to 614,578.60, 921,867.90 and 402,002.20 is: 603,003.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    614,578.60 : 921,867.90 = 402,002.20 : x
  2. Step 2: Convert to fraction form
    614,578.60/921,867.90 = 402,002.20/x
  3. Step 3: Cross multiply
    614,578.60x = 921,867.90 × 402,002.20
  4. Step 4: Simplify right side
    614,578.60x = 370,592,923,909.38
  5. Step 5: Solve for x
    x = 370,592,923,909.38/614,578.60
  6. Step 6: Final answer
    x = 603,003.30

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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.