Home / 1,240,865.06-1,712,128.15-724,384.55

Finding the Fourth Proportional to 1,240,865.06, 1,712,128.15 and 724,384.55

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Solution

The fourth proportional to 1,240,865.06, 1,712,128.15 and 724,384.55 is: 999,495.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,240,865.06 : 1,712,128.15 = 724,384.55 : x
  2. Step 2: Convert to fraction form
    1,240,865.06/1,712,128.15 = 724,384.55/x
  3. Step 3: Cross multiply
    1,240,865.06x = 1,712,128.15 × 724,384.55
  4. Step 4: Simplify right side
    1,240,865.06x = 1,240,239,184,665.88
  5. Step 5: Solve for x
    x = 1,240,239,184,665.88/1,240,865.06
  6. Step 6: Final answer
    x = 999,495.62

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.