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Finding the Fourth Proportional to 696,002.28, 960,550.56 and 390,130.68

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Solution

The fourth proportional to 696,002.28, 960,550.56 and 390,130.68 is: 538,418.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    696,002.28 : 960,550.56 = 390,130.68 : x
  2. Step 2: Convert to fraction form
    696,002.28/960,550.56 = 390,130.68/x
  3. Step 3: Cross multiply
    696,002.28x = 960,550.56 × 390,130.68
  4. Step 4: Simplify right side
    696,002.28x = 374,740,243,147.18
  5. Step 5: Solve for x
    x = 374,740,243,147.18/696,002.28
  6. Step 6: Final answer
    x = 538,418.13

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1.5x scale

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.