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Finding the Fourth Proportional to 712,810.64, 1,069,375.56 and 239,483.12

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Solution

The fourth proportional to 712,810.64, 1,069,375.56 and 239,483.12 is: 359,278.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    712,810.64 : 1,069,375.56 = 239,483.12 : x
  2. Step 2: Convert to fraction form
    712,810.64/1,069,375.56 = 239,483.12/x
  3. Step 3: Cross multiply
    712,810.64x = 1,069,375.56 × 239,483.12
  4. Step 4: Simplify right side
    712,810.64x = 256,097,395,560.55
  5. Step 5: Solve for x
    x = 256,097,395,560.55/712,810.64
  6. Step 6: Final answer
    x = 359,278.30

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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.