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Finding the Fourth Proportional to 586,728.60, 809,657.46 and 360,330.36

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Solution

The fourth proportional to 586,728.60, 809,657.46 and 360,330.36 is: 497,238.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    586,728.60 : 809,657.46 = 360,330.36 : x
  2. Step 2: Convert to fraction form
    586,728.60/809,657.46 = 360,330.36/x
  3. Step 3: Cross multiply
    586,728.60x = 809,657.46 × 360,330.36
  4. Step 4: Simplify right side
    586,728.60x = 291,744,159,990.20
  5. Step 5: Solve for x
    x = 291,744,159,990.20/586,728.60
  6. Step 6: Final answer
    x = 497,238.69

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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.