Home / 614,621.66-921,719.28-215,253.62

Finding the Fourth Proportional to 614,621.66, 921,719.28 and 215,253.62

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Solution

The fourth proportional to 614,621.66, 921,719.28 and 215,253.62 is: 322,805.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    614,621.66 : 921,719.28 = 215,253.62 : x
  2. Step 2: Convert to fraction form
    614,621.66/921,719.28 = 215,253.62/x
  3. Step 3: Cross multiply
    614,621.66x = 921,719.28 × 215,253.62
  4. Step 4: Simplify right side
    614,621.66x = 198,403,411,643.79
  5. Step 5: Solve for x
    x = 198,403,411,643.79/614,621.66
  6. Step 6: Final answer
    x = 322,805.76

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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.