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Finding the Fourth Proportional to 708,066.66, 977,126.58 and 385,775.76

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Solution

The fourth proportional to 708,066.66, 977,126.58 and 385,775.76 is: 532,367.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    708,066.66 : 977,126.58 = 385,775.76 : x
  2. Step 2: Convert to fraction form
    708,066.66/977,126.58 = 385,775.76/x
  3. Step 3: Cross multiply
    708,066.66x = 977,126.58 × 385,775.76
  4. Step 4: Simplify right side
    708,066.66x = 376,951,749,015.70
  5. Step 5: Solve for x
    x = 376,951,749,015.70/708,066.66
  6. Step 6: Final answer
    x = 532,367.60

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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.