Home / 931,420.13-1,397,672.31-391,637.35

Finding the Fourth Proportional to 931,420.13, 1,397,672.31 and 391,637.35

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Solution

The fourth proportional to 931,420.13, 1,397,672.31 and 391,637.35 is: 587,683.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    931,420.13 : 1,397,672.31 = 391,637.35 : x
  2. Step 2: Convert to fraction form
    931,420.13/1,397,672.31 = 391,637.35/x
  3. Step 3: Cross multiply
    931,420.13x = 1,397,672.31 × 391,637.35
  4. Step 4: Simplify right side
    931,420.13x = 547,380,675,010.60
  5. Step 5: Solve for x
    x = 547,380,675,010.60/931,420.13
  6. Step 6: Final answer
    x = 587,683.96

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.