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Finding the Fourth Proportional to 586,585.92, 809,488.56 and 318,313.92

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Solution

The fourth proportional to 586,585.92, 809,488.56 and 318,313.92 is: 439,273.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    586,585.92 : 809,488.56 = 318,313.92 : x
  2. Step 2: Convert to fraction form
    586,585.92/809,488.56 = 318,313.92/x
  3. Step 3: Cross multiply
    586,585.92x = 809,488.56 × 318,313.92
  4. Step 4: Simplify right side
    586,585.92x = 257,671,476,728.76
  5. Step 5: Solve for x
    x = 257,671,476,728.76/586,585.92
  6. Step 6: Final answer
    x = 439,273.20

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.