Home / 696,444.14-961,132.95-390,618.63

Finding the Fourth Proportional to 696,444.14, 961,132.95 and 390,618.63

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Solution

The fourth proportional to 696,444.14, 961,132.95 and 390,618.63 is: 539,076.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    696,444.14 : 961,132.95 = 390,618.63 : x
  2. Step 2: Convert to fraction form
    696,444.14/961,132.95 = 390,618.63/x
  3. Step 3: Cross multiply
    696,444.14x = 961,132.95 × 390,618.63
  4. Step 4: Simplify right side
    696,444.14x = 375,436,436,176.86
  5. Step 5: Solve for x
    x = 375,436,436,176.86/696,444.14
  6. Step 6: Final answer
    x = 539,076.16

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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.