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Finding the Fourth Proportional to 708,482.12, 977,685.84 and 386,198.52

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Solution

The fourth proportional to 708,482.12, 977,685.84 and 386,198.52 is: 532,943.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    708,482.12 : 977,685.84 = 386,198.52 : x
  2. Step 2: Convert to fraction form
    708,482.12/977,685.84 = 386,198.52/x
  3. Step 3: Cross multiply
    708,482.12x = 977,685.84 × 386,198.52
  4. Step 4: Simplify right side
    708,482.12x = 377,580,824,432.96
  5. Step 5: Solve for x
    x = 377,580,824,432.96/708,482.12
  6. Step 6: Final answer
    x = 532,943.34

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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.