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Finding the Fourth Proportional to 532,085.40, 798,128.10 and 488,539.80

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Solution

The fourth proportional to 532,085.40, 798,128.10 and 488,539.80 is: 732,809.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    532,085.40 : 798,128.10 = 488,539.80 : x
  2. Step 2: Convert to fraction form
    532,085.40/798,128.10 = 488,539.80/x
  3. Step 3: Cross multiply
    532,085.40x = 798,128.10 × 488,539.80
  4. Step 4: Simplify right side
    532,085.40x = 389,917,342,348.38
  5. Step 5: Solve for x
    x = 389,917,342,348.38/532,085.40
  6. Step 6: Final answer
    x = 732,809.70

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Similar ratio
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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.