Home / 898,863.47-1,240,424.21-490,965.57

Finding the Fourth Proportional to 898,863.47, 1,240,424.21 and 490,965.57

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Solution

The fourth proportional to 898,863.47, 1,240,424.21 and 490,965.57 is: 677,528.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    898,863.47 : 1,240,424.21 = 490,965.57 : x
  2. Step 2: Convert to fraction form
    898,863.47/1,240,424.21 = 490,965.57/x
  3. Step 3: Cross multiply
    898,863.47x = 1,240,424.21 × 490,965.57
  4. Step 4: Simplify right side
    898,863.47x = 609,005,580,531.86
  5. Step 5: Solve for x
    x = 609,005,580,531.86/898,863.47
  6. Step 6: Final answer
    x = 677,528.46

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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.