Home / 1,315,862.04-1,970,683.86-642,404.55

Finding the Fourth Proportional to 1,315,862.04, 1,970,683.86 and 642,404.55

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Solution

The fourth proportional to 1,315,862.04, 1,970,683.86 and 642,404.55 is: 962,088.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,315,862.04 : 1,970,683.86 = 642,404.55 : x
  2. Step 2: Convert to fraction form
    1,315,862.04/1,970,683.86 = 642,404.55/x
  3. Step 3: Cross multiply
    1,315,862.04x = 1,970,683.86 × 642,404.55
  4. Step 4: Simplify right side
    1,315,862.04x = 1,265,976,278,275.56
  5. Step 5: Solve for x
    x = 1,265,976,278,275.56/1,315,862.04
  6. Step 6: Final answer
    x = 962,088.91

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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.