Home / 662,011.83-913,643.60-390,167.33

Finding the Fourth Proportional to 662,011.83, 913,643.60 and 390,167.33

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Solution

The fourth proportional to 662,011.83, 913,643.60 and 390,167.33 is: 538,470.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    662,011.83 : 913,643.60 = 390,167.33 : x
  2. Step 2: Convert to fraction form
    662,011.83/913,643.60 = 390,167.33/x
  3. Step 3: Cross multiply
    662,011.83x = 913,643.60 × 390,167.33
  4. Step 4: Simplify right side
    662,011.83x = 356,473,877,464.53
  5. Step 5: Solve for x
    x = 356,473,877,464.53/662,011.83
  6. Step 6: Final answer
    x = 538,470.55

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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.