Home / 1,290,465.64-1,935,572.66-391,915.18

Finding the Fourth Proportional to 1,290,465.64, 1,935,572.66 and 391,915.18

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Solution

The fourth proportional to 1,290,465.64, 1,935,572.66 and 391,915.18 is: 587,834.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,290,465.64 : 1,935,572.66 = 391,915.18 : x
  2. Step 2: Convert to fraction form
    1,290,465.64/1,935,572.66 = 391,915.18/x
  3. Step 3: Cross multiply
    1,290,465.64x = 1,935,572.66 × 391,915.18
  4. Step 4: Simplify right side
    1,290,465.64x = 758,580,298,488.95
  5. Step 5: Solve for x
    x = 758,580,298,488.95/1,290,465.64
  6. Step 6: Final answer
    x = 587,834.56

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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.