Home / 1,328,730.40-1,993,387.20-430,019.20

Finding the Fourth Proportional to 1,328,730.40, 1,993,387.20 and 430,019.20

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Solution

The fourth proportional to 1,328,730.40, 1,993,387.20 and 430,019.20 is: 645,123.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,328,730.40 : 1,993,387.20 = 430,019.20 : x
  2. Step 2: Convert to fraction form
    1,328,730.40/1,993,387.20 = 430,019.20/x
  3. Step 3: Cross multiply
    1,328,730.40x = 1,993,387.20 × 430,019.20
  4. Step 4: Simplify right side
    1,328,730.40x = 857,194,769,034.24
  5. Step 5: Solve for x
    x = 857,194,769,034.24/1,328,730.40
  6. Step 6: Final answer
    x = 645,123.17

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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.