Home / 672,154.10-927,148.88-400,018.80

Finding the Fourth Proportional to 672,154.10, 927,148.88 and 400,018.80

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Solution

The fourth proportional to 672,154.10, 927,148.88 and 400,018.80 is: 551,773.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    672,154.10 : 927,148.88 = 400,018.80 : x
  2. Step 2: Convert to fraction form
    672,154.10/927,148.88 = 400,018.80/x
  3. Step 3: Cross multiply
    672,154.10x = 927,148.88 × 400,018.80
  4. Step 4: Simplify right side
    672,154.10x = 370,876,986,875.80
  5. Step 5: Solve for x
    x = 370,876,986,875.80/672,154.10
  6. Step 6: Final answer
    x = 551,773.75

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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.