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Finding the Fourth Proportional to 1,295,618.04, 1,787,948.22 and 722,657.76

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Solution

The fourth proportional to 1,295,618.04, 1,787,948.22 and 722,657.76 is: 997,265.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,295,618.04 : 1,787,948.22 = 722,657.76 : x
  2. Step 2: Convert to fraction form
    1,295,618.04/1,787,948.22 = 722,657.76/x
  3. Step 3: Cross multiply
    1,295,618.04x = 1,787,948.22 × 722,657.76
  4. Step 4: Simplify right side
    1,295,618.04x = 1,292,074,655,661.19
  5. Step 5: Solve for x
    x = 1,292,074,655,661.19/1,295,618.04
  6. Step 6: Final answer
    x = 997,265.10

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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.