Home / 688,291.20-1,030,363.20-613,641.60

Finding the Fourth Proportional to 688,291.20, 1,030,363.20 and 613,641.60

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Solution

The fourth proportional to 688,291.20, 1,030,363.20 and 613,641.60 is: 918,613.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    688,291.20 : 1,030,363.20 = 613,641.60 : x
  2. Step 2: Convert to fraction form
    688,291.20/1,030,363.20 = 613,641.60/x
  3. Step 3: Cross multiply
    688,291.20x = 1,030,363.20 × 613,641.60
  4. Step 4: Simplify right side
    688,291.20x = 632,273,722,629.12
  5. Step 5: Solve for x
    x = 632,273,722,629.12/688,291.20
  6. Step 6: Final answer
    x = 918,613.70

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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.