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Finding the Fourth Proportional to 713,060.34, 984,031.01 and 390,763.50

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Solution

The fourth proportional to 713,060.34, 984,031.01 and 390,763.50 is: 539,257.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    713,060.34 : 984,031.01 = 390,763.50 : x
  2. Step 2: Convert to fraction form
    713,060.34/984,031.01 = 390,763.50/x
  3. Step 3: Cross multiply
    713,060.34x = 984,031.01 × 390,763.50
  4. Step 4: Simplify right side
    713,060.34x = 384,523,399,622.32
  5. Step 5: Solve for x
    x = 384,523,399,622.32/713,060.34
  6. Step 6: Final answer
    x = 539,257.87

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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.