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Finding the Fourth Proportional to 708,275.04, 977,391.15 and 385,978.23

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Solution

The fourth proportional to 708,275.04, 977,391.15 and 385,978.23 is: 532,634.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    708,275.04 : 977,391.15 = 385,978.23 : x
  2. Step 2: Convert to fraction form
    708,275.04/977,391.15 = 385,978.23/x
  3. Step 3: Cross multiply
    708,275.04x = 977,391.15 × 385,978.23
  4. Step 4: Simplify right side
    708,275.04x = 377,251,706,094.67
  5. Step 5: Solve for x
    x = 377,251,706,094.67/708,275.04
  6. Step 6: Final answer
    x = 532,634.48

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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.