Home / 865,631.60-1,298,447.40-510,815.60

Finding the Fourth Proportional to 865,631.60, 1,298,447.40 and 510,815.60

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Solution

The fourth proportional to 865,631.60, 1,298,447.40 and 510,815.60 is: 766,223.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    865,631.60 : 1,298,447.40 = 510,815.60 : x
  2. Step 2: Convert to fraction form
    865,631.60/1,298,447.40 = 510,815.60/x
  3. Step 3: Cross multiply
    865,631.60x = 1,298,447.40 × 510,815.60
  4. Step 4: Simplify right side
    865,631.60x = 663,267,187,699.44
  5. Step 5: Solve for x
    x = 663,267,187,699.44/865,631.60
  6. Step 6: Final answer
    x = 766,223.40

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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.