Home / 687,427.76-1,031,549.88-371,877.68

Finding the Fourth Proportional to 687,427.76, 1,031,549.88 and 371,877.68

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Solution

The fourth proportional to 687,427.76, 1,031,549.88 and 371,877.68 is: 558,037.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,427.76 : 1,031,549.88 = 371,877.68 : x
  2. Step 2: Convert to fraction form
    687,427.76/1,031,549.88 = 371,877.68/x
  3. Step 3: Cross multiply
    687,427.76x = 1,031,549.88 × 371,877.68
  4. Step 4: Simplify right side
    687,427.76x = 383,610,376,178.68
  5. Step 5: Solve for x
    x = 383,610,376,178.68/687,427.76
  6. Step 6: Final answer
    x = 558,037.37

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.