Home / 912,415.60-1,366,031.40-862,764.40

Finding the Fourth Proportional to 912,415.60, 1,366,031.40 and 862,764.40

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Solution

The fourth proportional to 912,415.60, 1,366,031.40 and 862,764.40 is: 1,291,695.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    912,415.60 : 1,366,031.40 = 862,764.40 : x
  2. Step 2: Convert to fraction form
    912,415.60/1,366,031.40 = 862,764.40/x
  3. Step 3: Cross multiply
    912,415.60x = 1,366,031.40 × 862,764.40
  4. Step 4: Simplify right side
    912,415.60x = 1,178,563,261,202.16
  5. Step 5: Solve for x
    x = 1,178,563,261,202.16/912,415.60
  6. Step 6: Final answer
    x = 1,291,695.65

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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.