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Finding the Fourth Proportional to 611,579.60, 917,369.40 and 358,981.10

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Solution

The fourth proportional to 611,579.60, 917,369.40 and 358,981.10 is: 538,471.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    611,579.60 : 917,369.40 = 358,981.10 : x
  2. Step 2: Convert to fraction form
    611,579.60/917,369.40 = 358,981.10/x
  3. Step 3: Cross multiply
    611,579.60x = 917,369.40 × 358,981.10
  4. Step 4: Simplify right side
    611,579.60x = 329,318,276,318.34
  5. Step 5: Solve for x
    x = 329,318,276,318.34/611,579.60
  6. Step 6: Final answer
    x = 538,471.65

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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.