Home / 712,424.32-983,138.56-385,735.74

Finding the Fourth Proportional to 712,424.32, 983,138.56 and 385,735.74

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Solution

The fourth proportional to 712,424.32, 983,138.56 and 385,735.74 is: 532,311.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    712,424.32 : 983,138.56 = 385,735.74 : x
  2. Step 2: Convert to fraction form
    712,424.32/983,138.56 = 385,735.74/x
  3. Step 3: Cross multiply
    712,424.32x = 983,138.56 × 385,735.74
  4. Step 4: Simplify right side
    712,424.32x = 379,231,679,964.13
  5. Step 5: Solve for x
    x = 379,231,679,964.13/712,424.32
  6. Step 6: Final answer
    x = 532,311.53

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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.