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Finding the Fourth Proportional to 1,260,497.04, 1,739,509.40 and 687,557.76

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Solution

The fourth proportional to 1,260,497.04, 1,739,509.40 and 687,557.76 is: 948,842.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,260,497.04 : 1,739,509.40 = 687,557.76 : x
  2. Step 2: Convert to fraction form
    1,260,497.04/1,739,509.40 = 687,557.76/x
  3. Step 3: Cross multiply
    1,260,497.04x = 1,739,509.40 × 687,557.76
  4. Step 4: Simplify right side
    1,260,497.04x = 1,196,013,186,562.94
  5. Step 5: Solve for x
    x = 1,196,013,186,562.94/1,260,497.04
  6. Step 6: Final answer
    x = 948,842.52

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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.