Home / 912,421.60-1,366,040.40-862,770.40

Finding the Fourth Proportional to 912,421.60, 1,366,040.40 and 862,770.40

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Solution

The fourth proportional to 912,421.60, 1,366,040.40 and 862,770.40 is: 1,291,704.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    912,421.60 : 1,366,040.40 = 862,770.40 : x
  2. Step 2: Convert to fraction form
    912,421.60/1,366,040.40 = 862,770.40/x
  3. Step 3: Cross multiply
    912,421.60x = 1,366,040.40 × 862,770.40
  4. Step 4: Simplify right side
    912,421.60x = 1,178,579,222,324.16
  5. Step 5: Solve for x
    x = 1,178,579,222,324.16/912,421.60
  6. Step 6: Final answer
    x = 1,291,704.65

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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.