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Finding the Fourth Proportional to 614,534.80, 921,802.20 and 446,573.20

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Solution

The fourth proportional to 614,534.80, 921,802.20 and 446,573.20 is: 669,859.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    614,534.80 : 921,802.20 = 446,573.20 : x
  2. Step 2: Convert to fraction form
    614,534.80/921,802.20 = 446,573.20/x
  3. Step 3: Cross multiply
    614,534.80x = 921,802.20 × 446,573.20
  4. Step 4: Simplify right side
    614,534.80x = 411,652,158,221.04
  5. Step 5: Solve for x
    x = 411,652,158,221.04/614,534.80
  6. Step 6: Final answer
    x = 669,859.80

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Similar ratio
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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.