Home / 817,305.16-1,225,162.90-390,730.47

Finding the Fourth Proportional to 817,305.16, 1,225,162.90 and 390,730.47

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Solution

The fourth proportional to 817,305.16, 1,225,162.90 and 390,730.47 is: 585,715.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    817,305.16 : 1,225,162.90 = 390,730.47 : x
  2. Step 2: Convert to fraction form
    817,305.16/1,225,162.90 = 390,730.47/x
  3. Step 3: Cross multiply
    817,305.16x = 1,225,162.90 × 390,730.47
  4. Step 4: Simplify right side
    817,305.16x = 478,708,475,743.56
  5. Step 5: Solve for x
    x = 478,708,475,743.56/817,305.16
  6. Step 6: Final answer
    x = 585,715.71

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.