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Finding the Fourth Proportional to 713,254.60, 1,069,881.90 and 319,270.60

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Solution

The fourth proportional to 713,254.60, 1,069,881.90 and 319,270.60 is: 478,905.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    713,254.60 : 1,069,881.90 = 319,270.60 : x
  2. Step 2: Convert to fraction form
    713,254.60/1,069,881.90 = 319,270.60/x
  3. Step 3: Cross multiply
    713,254.60x = 1,069,881.90 × 319,270.60
  4. Step 4: Simplify right side
    713,254.60x = 341,581,836,142.14
  5. Step 5: Solve for x
    x = 341,581,836,142.14/713,254.60
  6. Step 6: Final answer
    x = 478,905.90

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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.