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Finding the Fourth Proportional to 579,916.40, 870,652.20 and 369,964.40

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Solution

The fourth proportional to 579,916.40, 870,652.20 and 369,964.40 is: 555,442.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    579,916.40 : 870,652.20 = 369,964.40 : x
  2. Step 2: Convert to fraction form
    579,916.40/870,652.20 = 369,964.40/x
  3. Step 3: Cross multiply
    579,916.40x = 870,652.20 × 369,964.40
  4. Step 4: Simplify right side
    579,916.40x = 322,110,318,781.68
  5. Step 5: Solve for x
    x = 322,110,318,781.68/579,916.40
  6. Step 6: Final answer
    x = 555,442.68

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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.