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Finding the Fourth Proportional to 707,892, 976,899.54 and 385,604.76

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Solution

The fourth proportional to 707,892, 976,899.54 and 385,604.76 is: 532,139.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    707,892 : 976,899.54 = 385,604.76 : x
  2. Step 2: Convert to fraction form
    707,892/976,899.54 = 385,604.76/x
  3. Step 3: Cross multiply
    707,892x = 976,899.54 × 385,604.76
  4. Step 4: Simplify right side
    707,892x = 376,697,112,665.81
  5. Step 5: Solve for x
    x = 376,697,112,665.81/707,892
  6. Step 6: Final answer
    x = 532,139.24

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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.