Home / 880,780.89-1,215,436.95-498,810.42

Finding the Fourth Proportional to 880,780.89, 1,215,436.95 and 498,810.42

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Solution

The fourth proportional to 880,780.89, 1,215,436.95 and 498,810.42 is: 688,335.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    880,780.89 : 1,215,436.95 = 498,810.42 : x
  2. Step 2: Convert to fraction form
    880,780.89/1,215,436.95 = 498,810.42/x
  3. Step 3: Cross multiply
    880,780.89x = 1,215,436.95 × 498,810.42
  4. Step 4: Simplify right side
    880,780.89x = 606,272,615,513.02
  5. Step 5: Solve for x
    x = 606,272,615,513.02/880,780.89
  6. Step 6: Final answer
    x = 688,335.34

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Double scale
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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.