Home / 1,028,720.70-1,542,832.88-429,356.95

Finding the Fourth Proportional to 1,028,720.70, 1,542,832.88 and 429,356.95

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Solution

The fourth proportional to 1,028,720.70, 1,542,832.88 and 429,356.95 is: 643,931.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,028,720.70 : 1,542,832.88 = 429,356.95 : x
  2. Step 2: Convert to fraction form
    1,028,720.70/1,542,832.88 = 429,356.95/x
  3. Step 3: Cross multiply
    1,028,720.70x = 1,542,832.88 × 429,356.95
  4. Step 4: Simplify right side
    1,028,720.70x = 662,426,013,712.65
  5. Step 5: Solve for x
    x = 662,426,013,712.65/1,028,720.70
  6. Step 6: Final answer
    x = 643,931.84

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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.