Home / 1,280,988.18-1,921,412.97-649,885.59

Finding the Fourth Proportional to 1,280,988.18, 1,921,412.97 and 649,885.59

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Solution

The fourth proportional to 1,280,988.18, 1,921,412.97 and 649,885.59 is: 974,793.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,280,988.18 : 1,921,412.97 = 649,885.59 : x
  2. Step 2: Convert to fraction form
    1,280,988.18/1,921,412.97 = 649,885.59/x
  3. Step 3: Cross multiply
    1,280,988.18x = 1,921,412.97 × 649,885.59
  4. Step 4: Simplify right side
    1,280,988.18x = 1,248,698,601,642.10
  5. Step 5: Solve for x
    x = 1,248,698,601,642.10/1,280,988.18
  6. Step 6: Final answer
    x = 974,793.23

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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.