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Finding the Fourth Proportional to 708,065.66, 977,125.20 and 385,774.76

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Solution

The fourth proportional to 708,065.66, 977,125.20 and 385,774.76 is: 532,366.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    708,065.66 : 977,125.20 = 385,774.76 : x
  2. Step 2: Convert to fraction form
    708,065.66/977,125.20 = 385,774.76/x
  3. Step 3: Cross multiply
    708,065.66x = 977,125.20 × 385,774.76
  4. Step 4: Simplify right side
    708,065.66x = 376,950,239,519.95
  5. Step 5: Solve for x
    x = 376,950,239,519.95/708,065.66
  6. Step 6: Final answer
    x = 532,366.22

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Double scale
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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.