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Finding the Fourth Proportional to 586,612.32, 809,525.52 and 318,340.32

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Solution

The fourth proportional to 586,612.32, 809,525.52 and 318,340.32 is: 439,309.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    586,612.32 : 809,525.52 = 318,340.32 : x
  2. Step 2: Convert to fraction form
    586,612.32/809,525.52 = 318,340.32/x
  3. Step 3: Cross multiply
    586,612.32x = 809,525.52 × 318,340.32
  4. Step 4: Simplify right side
    586,612.32x = 257,704,613,084.97
  5. Step 5: Solve for x
    x = 257,704,613,084.97/586,612.32
  6. Step 6: Final answer
    x = 439,309.92

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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.