Home / 687,708.90-1,031,558.49-374,158.98

Finding the Fourth Proportional to 687,708.90, 1,031,558.49 and 374,158.98

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Solution

The fourth proportional to 687,708.90, 1,031,558.49 and 374,158.98 is: 561,235.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,708.90 : 1,031,558.49 = 374,158.98 : x
  2. Step 2: Convert to fraction form
    687,708.90/1,031,558.49 = 374,158.98/x
  3. Step 3: Cross multiply
    687,708.90x = 1,031,558.49 × 374,158.98
  4. Step 4: Simplify right side
    687,708.90x = 385,966,872,428.74
  5. Step 5: Solve for x
    x = 385,966,872,428.74/687,708.90
  6. Step 6: Final answer
    x = 561,235.83

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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.