Home / 749,170.90-1,123,406.98-389,245

Finding the Fourth Proportional to 749,170.90, 1,123,406.98 and 389,245

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Solution

The fourth proportional to 749,170.90, 1,123,406.98 and 389,245 is: 583,685.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    749,170.90 : 1,123,406.98 = 389,245 : x
  2. Step 2: Convert to fraction form
    749,170.90/1,123,406.98 = 389,245/x
  3. Step 3: Cross multiply
    749,170.90x = 1,123,406.98 × 389,245
  4. Step 4: Simplify right side
    749,170.90x = 437,280,547,983.88
  5. Step 5: Solve for x
    x = 437,280,547,983.88/749,170.90
  6. Step 6: Final answer
    x = 583,685.98

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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.