Home / 921,756.90-1,271,899.76-513,839.02

Finding the Fourth Proportional to 921,756.90, 1,271,899.76 and 513,839.02

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Solution

The fourth proportional to 921,756.90, 1,271,899.76 and 513,839.02 is: 709,028.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    921,756.90 : 1,271,899.76 = 513,839.02 : x
  2. Step 2: Convert to fraction form
    921,756.90/1,271,899.76 = 513,839.02/x
  3. Step 3: Cross multiply
    921,756.90x = 1,271,899.76 × 513,839.02
  4. Step 4: Simplify right side
    921,756.90x = 653,551,726,216.64
  5. Step 5: Solve for x
    x = 653,551,726,216.64/921,756.90
  6. Step 6: Final answer
    x = 709,028.30

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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.