Home / 912,146.61-1,368,442.89-642,800.13

Finding the Fourth Proportional to 912,146.61, 1,368,442.89 and 642,800.13

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Solution

The fourth proportional to 912,146.61, 1,368,442.89 and 642,800.13 is: 964,357.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    912,146.61 : 1,368,442.89 = 642,800.13 : x
  2. Step 2: Convert to fraction form
    912,146.61/1,368,442.89 = 642,800.13/x
  3. Step 3: Cross multiply
    912,146.61x = 1,368,442.89 × 642,800.13
  4. Step 4: Simplify right side
    912,146.61x = 879,635,267,589.58
  5. Step 5: Solve for x
    x = 879,635,267,589.58/912,146.61
  6. Step 6: Final answer
    x = 964,357.33

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.