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Finding the Fourth Proportional to 672,796.92, 928,684.62 and 400,950.12

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Solution

The fourth proportional to 672,796.92, 928,684.62 and 400,950.12 is: 553,445.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    672,796.92 : 928,684.62 = 400,950.12 : x
  2. Step 2: Convert to fraction form
    672,796.92/928,684.62 = 400,950.12/x
  3. Step 3: Cross multiply
    672,796.92x = 928,684.62 × 400,950.12
  4. Step 4: Simplify right side
    672,796.92x = 372,356,209,831.15
  5. Step 5: Solve for x
    x = 372,356,209,831.15/672,796.92
  6. Step 6: Final answer
    x = 553,445.18

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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.