Home / 639,082,862.40-958,624,293.60-329,146,471.20

Finding the Fourth Proportional to 639,082,862.40, 958,624,293.60 and 329,146,471.20

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Solution

The fourth proportional to 639,082,862.40, 958,624,293.60 and 329,146,471.20 is: 493,719,706.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,082,862.40 : 958,624,293.60 = 329,146,471.20 : x
  2. Step 2: Convert to fraction form
    639,082,862.40/958,624,293.60 = 329,146,471.20/x
  3. Step 3: Cross multiply
    639,082,862.40x = 958,624,293.60 × 329,146,471.20
  4. Step 4: Simplify right side
    639,082,862.40x = 315,527,803,445,032,768
  5. Step 5: Solve for x
    x = 315,527,803,445,032,768/639,082,862.40
  6. Step 6: Final answer
    x = 493,719,706.80

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Double scale
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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.