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Finding the Fourth Proportional to 876,952.60, 1,315,428.90 and 404,560.60

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Solution

The fourth proportional to 876,952.60, 1,315,428.90 and 404,560.60 is: 606,840.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    876,952.60 : 1,315,428.90 = 404,560.60 : x
  2. Step 2: Convert to fraction form
    876,952.60/1,315,428.90 = 404,560.60/x
  3. Step 3: Cross multiply
    876,952.60x = 1,315,428.90 × 404,560.60
  4. Step 4: Simplify right side
    876,952.60x = 532,170,705,041.34
  5. Step 5: Solve for x
    x = 532,170,705,041.34/876,952.60
  6. Step 6: Final answer
    x = 606,840.90

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.