Home / 913,421.80-1,370,132.70-878,429.80

Finding the Fourth Proportional to 913,421.80, 1,370,132.70 and 878,429.80

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Solution

The fourth proportional to 913,421.80, 1,370,132.70 and 878,429.80 is: 1,317,644.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    913,421.80 : 1,370,132.70 = 878,429.80 : x
  2. Step 2: Convert to fraction form
    913,421.80/1,370,132.70 = 878,429.80/x
  3. Step 3: Cross multiply
    913,421.80x = 1,370,132.70 × 878,429.80
  4. Step 4: Simplify right side
    913,421.80x = 1,203,565,393,634.46
  5. Step 5: Solve for x
    x = 1,203,565,393,634.46/913,421.80
  6. Step 6: Final answer
    x = 1,317,644.70

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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.