Home / 486,059.20-724,582.72-478,382.72

Finding the Fourth Proportional to 486,059.20, 724,582.72 and 478,382.72

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Solution

The fourth proportional to 486,059.20, 724,582.72 and 478,382.72 is: 713,139.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    486,059.20 : 724,582.72 = 478,382.72 : x
  2. Step 2: Convert to fraction form
    486,059.20/724,582.72 = 478,382.72/x
  3. Step 3: Cross multiply
    486,059.20x = 724,582.72 × 478,382.72
  4. Step 4: Simplify right side
    486,059.20x = 346,627,852,458.60
  5. Step 5: Solve for x
    x = 346,627,852,458.60/486,059.20
  6. Step 6: Final answer
    x = 713,139.17

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.