Home / 817,303.16-1,225,159.91-390,728.47

Finding the Fourth Proportional to 817,303.16, 1,225,159.91 and 390,728.47

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Solution

The fourth proportional to 817,303.16, 1,225,159.91 and 390,728.47 is: 585,712.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    817,303.16 : 1,225,159.91 = 390,728.47 : x
  2. Step 2: Convert to fraction form
    817,303.16/1,225,159.91 = 390,728.47/x
  3. Step 3: Cross multiply
    817,303.16x = 1,225,159.91 × 390,728.47
  4. Step 4: Simplify right side
    817,303.16x = 478,704,851,340.82
  5. Step 5: Solve for x
    x = 478,704,851,340.82/817,303.16
  6. Step 6: Final answer
    x = 585,712.71

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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.