Home / 678,937.32-936,829.44-392,402.16

Finding the Fourth Proportional to 678,937.32, 936,829.44 and 392,402.16

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Solution

The fourth proportional to 678,937.32, 936,829.44 and 392,402.16 is: 541,454.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,937.32 : 936,829.44 = 392,402.16 : x
  2. Step 2: Convert to fraction form
    678,937.32/936,829.44 = 392,402.16/x
  3. Step 3: Cross multiply
    678,937.32x = 936,829.44 × 392,402.16
  4. Step 4: Simplify right side
    678,937.32x = 367,613,895,807.59
  5. Step 5: Solve for x
    x = 367,613,895,807.59/678,937.32
  6. Step 6: Final answer
    x = 541,454.84

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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.