Home / 870,658.20-1,201,442.40-488,611.17

Finding the Fourth Proportional to 870,658.20, 1,201,442.40 and 488,611.17

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Solution

The fourth proportional to 870,658.20, 1,201,442.40 and 488,611.17 is: 674,246.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    870,658.20 : 1,201,442.40 = 488,611.17 : x
  2. Step 2: Convert to fraction form
    870,658.20/1,201,442.40 = 488,611.17/x
  3. Step 3: Cross multiply
    870,658.20x = 1,201,442.40 × 488,611.17
  4. Step 4: Simplify right side
    870,658.20x = 587,038,176,751.61
  5. Step 5: Solve for x
    x = 587,038,176,751.61/870,658.20
  6. Step 6: Final answer
    x = 674,246.42

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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.