Home / 467,931.36-645,159.42-390,518.04

Finding the Fourth Proportional to 467,931.36, 645,159.42 and 390,518.04

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Solution

The fourth proportional to 467,931.36, 645,159.42 and 390,518.04 is: 538,425.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    467,931.36 : 645,159.42 = 390,518.04 : x
  2. Step 2: Convert to fraction form
    467,931.36/645,159.42 = 390,518.04/x
  3. Step 3: Cross multiply
    467,931.36x = 645,159.42 × 390,518.04
  4. Step 4: Simplify right side
    467,931.36x = 251,946,392,185.94
  5. Step 5: Solve for x
    x = 251,946,392,185.94/467,931.36
  6. Step 6: Final answer
    x = 538,425.96

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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.