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Finding the Fourth Proportional to 708,067.66, 977,127.96 and 385,776.76

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Solution

The fourth proportional to 708,067.66, 977,127.96 and 385,776.76 is: 532,368.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    708,067.66 : 977,127.96 = 385,776.76 : x
  2. Step 2: Convert to fraction form
    708,067.66/977,127.96 = 385,776.76/x
  3. Step 3: Cross multiply
    708,067.66x = 977,127.96 × 385,776.76
  4. Step 4: Simplify right side
    708,067.66x = 376,953,258,514.21
  5. Step 5: Solve for x
    x = 376,953,258,514.21/708,067.66
  6. Step 6: Final answer
    x = 532,368.98

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Double scale
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Similar ratio
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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.