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Finding the Fourth Proportional to 586,430.96, 809,276.28 and 318,158.96

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Solution

The fourth proportional to 586,430.96, 809,276.28 and 318,158.96 is: 439,060.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    586,430.96 : 809,276.28 = 318,158.96 : x
  2. Step 2: Convert to fraction form
    586,430.96/809,276.28 = 318,158.96/x
  3. Step 3: Cross multiply
    586,430.96x = 809,276.28 × 318,158.96
  4. Step 4: Simplify right side
    586,430.96x = 257,478,499,597.47
  5. Step 5: Solve for x
    x = 257,478,499,597.47/586,430.96
  6. Step 6: Final answer
    x = 439,060.21

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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.