Home / 712,727.32-983,564.10-390,449.08

Finding the Fourth Proportional to 712,727.32, 983,564.10 and 390,449.08

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Solution

The fourth proportional to 712,727.32, 983,564.10 and 390,449.08 is: 538,819.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    712,727.32 : 983,564.10 = 390,449.08 : x
  2. Step 2: Convert to fraction form
    712,727.32/983,564.10 = 390,449.08/x
  3. Step 3: Cross multiply
    712,727.32x = 983,564.10 × 390,449.08
  4. Step 4: Simplify right side
    712,727.32x = 384,031,697,966.03
  5. Step 5: Solve for x
    x = 384,031,697,966.03/712,727.32
  6. Step 6: Final answer
    x = 538,819.95

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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.