Home / 1,139,411.40-1,708,047.90-429,916.20

Finding the Fourth Proportional to 1,139,411.40, 1,708,047.90 and 429,916.20

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Solution

The fourth proportional to 1,139,411.40, 1,708,047.90 and 429,916.20 is: 644,470.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,139,411.40 : 1,708,047.90 = 429,916.20 : x
  2. Step 2: Convert to fraction form
    1,139,411.40/1,708,047.90 = 429,916.20/x
  3. Step 3: Cross multiply
    1,139,411.40x = 1,708,047.90 × 429,916.20
  4. Step 4: Simplify right side
    1,139,411.40x = 734,317,462,585.98
  5. Step 5: Solve for x
    x = 734,317,462,585.98/1,139,411.40
  6. Step 6: Final answer
    x = 644,470.88

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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.