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Finding the Fourth Proportional to 872,045.60, 1,223,663.20 and 872,045.60

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Solution

The fourth proportional to 872,045.60, 1,223,663.20 and 872,045.60 is: 1,223,663.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    872,045.60 : 1,223,663.20 = 872,045.60 : x
  2. Step 2: Convert to fraction form
    872,045.60/1,223,663.20 = 872,045.60/x
  3. Step 3: Cross multiply
    872,045.60x = 1,223,663.20 × 872,045.60
  4. Step 4: Simplify right side
    872,045.60x = 1,067,090,109,441.92
  5. Step 5: Solve for x
    x = 1,067,090,109,441.92/872,045.60
  6. Step 6: Final answer
    x = 1,223,663.20

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.