Home / 991,761.80-1,487,642.70-317,841.80

Finding the Fourth Proportional to 991,761.80, 1,487,642.70 and 317,841.80

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Solution

The fourth proportional to 991,761.80, 1,487,642.70 and 317,841.80 is: 476,762.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    991,761.80 : 1,487,642.70 = 317,841.80 : x
  2. Step 2: Convert to fraction form
    991,761.80/1,487,642.70 = 317,841.80/x
  3. Step 3: Cross multiply
    991,761.80x = 1,487,642.70 × 317,841.80
  4. Step 4: Simplify right side
    991,761.80x = 472,835,033,524.86
  5. Step 5: Solve for x
    x = 472,835,033,524.86/991,761.80
  6. Step 6: Final answer
    x = 476,762.70

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Half scale
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Double scale
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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.