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Finding the Fourth Proportional to 708,021.70, 977,067.03 and 385,730.80

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Solution

The fourth proportional to 708,021.70, 977,067.03 and 385,730.80 is: 532,306.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    708,021.70 : 977,067.03 = 385,730.80 : x
  2. Step 2: Convert to fraction form
    708,021.70/977,067.03 = 385,730.80/x
  3. Step 3: Cross multiply
    708,021.70x = 977,067.03 × 385,730.80
  4. Step 4: Simplify right side
    708,021.70x = 376,884,847,135.52
  5. Step 5: Solve for x
    x = 376,884,847,135.52/708,021.70
  6. Step 6: Final answer
    x = 532,306.92

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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.