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Finding the Fourth Proportional to 716,758.32, 988,715.04 and 448,019.76

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Solution

The fourth proportional to 716,758.32, 988,715.04 and 448,019.76 is: 618,010.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    716,758.32 : 988,715.04 = 448,019.76 : x
  2. Step 2: Convert to fraction form
    716,758.32/988,715.04 = 448,019.76/x
  3. Step 3: Cross multiply
    716,758.32x = 988,715.04 × 448,019.76
  4. Step 4: Simplify right side
    716,758.32x = 442,963,874,929.19
  5. Step 5: Solve for x
    x = 442,963,874,929.19/716,758.32
  6. Step 6: Final answer
    x = 618,010.09

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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.