Home / 898,704.18-1,240,220.16-511,500.59

Finding the Fourth Proportional to 898,704.18, 1,240,220.16 and 511,500.59

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Solution

The fourth proportional to 898,704.18, 1,240,220.16 and 511,500.59 is: 705,875.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    898,704.18 : 1,240,220.16 = 511,500.59 : x
  2. Step 2: Convert to fraction form
    898,704.18/1,240,220.16 = 511,500.59/x
  3. Step 3: Cross multiply
    898,704.18x = 1,240,220.16 × 511,500.59
  4. Step 4: Simplify right side
    898,704.18x = 634,373,342,019.62
  5. Step 5: Solve for x
    x = 634,373,342,019.62/898,704.18
  6. Step 6: Final answer
    x = 705,875.59

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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 (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.