Home / 674,258.90-930,505.50-387,779.18

Finding the Fourth Proportional to 674,258.90, 930,505.50 and 387,779.18

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Solution

The fourth proportional to 674,258.90, 930,505.50 and 387,779.18 is: 535,151.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    674,258.90 : 930,505.50 = 387,779.18 : x
  2. Step 2: Convert to fraction form
    674,258.90/930,505.50 = 387,779.18/x
  3. Step 3: Cross multiply
    674,258.90x = 930,505.50 × 387,779.18
  4. Step 4: Simplify right side
    674,258.90x = 360,830,659,775.49
  5. Step 5: Solve for x
    x = 360,830,659,775.49/674,258.90
  6. Step 6: Final answer
    x = 535,151.50

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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.