Home / 674,308.56-930,545.10-387,821.28

Finding the Fourth Proportional to 674,308.56, 930,545.10 and 387,821.28

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Solution

The fourth proportional to 674,308.56, 930,545.10 and 387,821.28 is: 535,192.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    674,308.56 : 930,545.10 = 387,821.28 : x
  2. Step 2: Convert to fraction form
    674,308.56/930,545.10 = 387,821.28/x
  3. Step 3: Cross multiply
    674,308.56x = 930,545.10 × 387,821.28
  4. Step 4: Simplify right side
    674,308.56x = 360,885,191,779.73
  5. Step 5: Solve for x
    x = 360,885,191,779.73/674,308.56
  6. Step 6: Final answer
    x = 535,192.96

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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.