Home / 858,390.20-1,287,585.30-522,090.35

Finding the Fourth Proportional to 858,390.20, 1,287,585.30 and 522,090.35

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Solution

The fourth proportional to 858,390.20, 1,287,585.30 and 522,090.35 is: 783,135.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    858,390.20 : 1,287,585.30 = 522,090.35 : x
  2. Step 2: Convert to fraction form
    858,390.20/1,287,585.30 = 522,090.35/x
  3. Step 3: Cross multiply
    858,390.20x = 1,287,585.30 × 522,090.35
  4. Step 4: Simplify right side
    858,390.20x = 672,235,859,931.86
  5. Step 5: Solve for x
    x = 672,235,859,931.86/858,390.20
  6. Step 6: Final answer
    x = 783,135.53

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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.