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Finding the Fourth Proportional to 877,686.30, 1,230,419.70 and 877,686.30

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Solution

The fourth proportional to 877,686.30, 1,230,419.70 and 877,686.30 is: 1,230,419.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    877,686.30 : 1,230,419.70 = 877,686.30 : x
  2. Step 2: Convert to fraction form
    877,686.30/1,230,419.70 = 877,686.30/x
  3. Step 3: Cross multiply
    877,686.30x = 1,230,419.70 × 877,686.30
  4. Step 4: Simplify right side
    877,686.30x = 1,079,922,513,940.11
  5. Step 5: Solve for x
    x = 1,079,922,513,940.11/877,686.30
  6. Step 6: Final answer
    x = 1,230,419.70

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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.