Home / 662,215.13-914,031.61-390,464.04

Finding the Fourth Proportional to 662,215.13, 914,031.61 and 390,464.04

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Solution

The fourth proportional to 662,215.13, 914,031.61 and 390,464.04 is: 538,943.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    662,215.13 : 914,031.61 = 390,464.04 : x
  2. Step 2: Convert to fraction form
    662,215.13/914,031.61 = 390,464.04/x
  3. Step 3: Cross multiply
    662,215.13x = 914,031.61 × 390,464.04
  4. Step 4: Simplify right side
    662,215.13x = 356,896,477,579.76
  5. Step 5: Solve for x
    x = 356,896,477,579.76/662,215.13
  6. Step 6: Final answer
    x = 538,943.41

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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.