Home / 898,705.76-1,240,222.39-511,502.20

Finding the Fourth Proportional to 898,705.76, 1,240,222.39 and 511,502.20

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Solution

The fourth proportional to 898,705.76, 1,240,222.39 and 511,502.20 is: 705,877.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    898,705.76 : 1,240,222.39 = 511,502.20 : x
  2. Step 2: Convert to fraction form
    898,705.76/1,240,222.39 = 511,502.20/x
  3. Step 3: Cross multiply
    898,705.76x = 1,240,222.39 × 511,502.20
  4. Step 4: Simplify right side
    898,705.76x = 634,376,476,594.95
  5. Step 5: Solve for x
    x = 634,376,476,594.95/898,705.76
  6. Step 6: Final answer
    x = 705,877.84

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Double scale
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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.