Home / 898,720.64-1,240,070.10-511,513.18

Finding the Fourth Proportional to 898,720.64, 1,240,070.10 and 511,513.18

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Solution

The fourth proportional to 898,720.64, 1,240,070.10 and 511,513.18 is: 705,794.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    898,720.64 : 1,240,070.10 = 511,513.18 : x
  2. Step 2: Convert to fraction form
    898,720.64/1,240,070.10 = 511,513.18/x
  3. Step 3: Cross multiply
    898,720.64x = 1,240,070.10 × 511,513.18
  4. Step 4: Simplify right side
    898,720.64x = 634,312,200,273.92
  5. Step 5: Solve for x
    x = 634,312,200,273.92/898,720.64
  6. Step 6: Final answer
    x = 705,794.63

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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.