Home / 740,085.40-1,110,128.10-402,995.80

Finding the Fourth Proportional to 740,085.40, 1,110,128.10 and 402,995.80

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Solution

The fourth proportional to 740,085.40, 1,110,128.10 and 402,995.80 is: 604,493.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    740,085.40 : 1,110,128.10 = 402,995.80 : x
  2. Step 2: Convert to fraction form
    740,085.40/1,110,128.10 = 402,995.80/x
  3. Step 3: Cross multiply
    740,085.40x = 1,110,128.10 × 402,995.80
  4. Step 4: Simplify right side
    740,085.40x = 447,376,961,761.98
  5. Step 5: Solve for x
    x = 447,376,961,761.98/740,085.40
  6. Step 6: Final answer
    x = 604,493.70

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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.