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Finding the Fourth Proportional to 586,501.02, 809,370.90 and 318,229.02

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Solution

The fourth proportional to 586,501.02, 809,370.90 and 318,229.02 is: 439,155.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    586,501.02 : 809,370.90 = 318,229.02 : x
  2. Step 2: Convert to fraction form
    586,501.02/809,370.90 = 318,229.02/x
  3. Step 3: Cross multiply
    586,501.02x = 809,370.90 × 318,229.02
  4. Step 4: Simplify right side
    586,501.02x = 257,565,308,323.52
  5. Step 5: Solve for x
    x = 257,565,308,323.52/586,501.02
  6. Step 6: Final answer
    x = 439,155.77

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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.