Home / 1,123,721.30-1,685,581.95-745,807.70

Finding the Fourth Proportional to 1,123,721.30, 1,685,581.95 and 745,807.70

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Solution

The fourth proportional to 1,123,721.30, 1,685,581.95 and 745,807.70 is: 1,118,711.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,123,721.30 : 1,685,581.95 = 745,807.70 : x
  2. Step 2: Convert to fraction form
    1,123,721.30/1,685,581.95 = 745,807.70/x
  3. Step 3: Cross multiply
    1,123,721.30x = 1,685,581.95 × 745,807.70
  4. Step 4: Simplify right side
    1,123,721.30x = 1,257,119,997,291.01
  5. Step 5: Solve for x
    x = 1,257,119,997,291.01/1,123,721.30
  6. Step 6: Final answer
    x = 1,118,711.55

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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.