Home / 891,070.40-1,229,563.86-509,121.92

Finding the Fourth Proportional to 891,070.40, 1,229,563.86 and 509,121.92

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Solution

The fourth proportional to 891,070.40, 1,229,563.86 and 509,121.92 is: 702,523.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    891,070.40 : 1,229,563.86 = 509,121.92 : x
  2. Step 2: Convert to fraction form
    891,070.40/1,229,563.86 = 509,121.92/x
  3. Step 3: Cross multiply
    891,070.40x = 1,229,563.86 × 509,121.92
  4. Step 4: Simplify right side
    891,070.40x = 625,997,913,165.81
  5. Step 5: Solve for x
    x = 625,997,913,165.81/891,070.40
  6. Step 6: Final answer
    x = 702,523.52

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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.