Home / 876,624.08-1,209,729.45-489,445.43

Finding the Fourth Proportional to 876,624.08, 1,209,729.45 and 489,445.43

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Solution

The fourth proportional to 876,624.08, 1,209,729.45 and 489,445.43 is: 675,428.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    876,624.08 : 1,209,729.45 = 489,445.43 : x
  2. Step 2: Convert to fraction form
    876,624.08/1,209,729.45 = 489,445.43/x
  3. Step 3: Cross multiply
    876,624.08x = 1,209,729.45 × 489,445.43
  4. Step 4: Simplify right side
    876,624.08x = 592,096,554,321.55
  5. Step 5: Solve for x
    x = 592,096,554,321.55/876,624.08
  6. Step 6: Final answer
    x = 675,428.12

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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.