Home / 921,040.40-1,270,948.92-513,100.64

Finding the Fourth Proportional to 921,040.40, 1,270,948.92 and 513,100.64

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Solution

The fourth proportional to 921,040.40, 1,270,948.92 and 513,100.64 is: 708,030.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    921,040.40 : 1,270,948.92 = 513,100.64 : x
  2. Step 2: Convert to fraction form
    921,040.40/1,270,948.92 = 513,100.64/x
  3. Step 3: Cross multiply
    921,040.40x = 1,270,948.92 × 513,100.64
  4. Step 4: Simplify right side
    921,040.40x = 652,124,704,259.31
  5. Step 5: Solve for x
    x = 652,124,704,259.31/921,040.40
  6. Step 6: Final answer
    x = 708,030.51

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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.