Home / 872,439.40-1,308,659.10-788,458.60

Finding the Fourth Proportional to 872,439.40, 1,308,659.10 and 788,458.60

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Solution

The fourth proportional to 872,439.40, 1,308,659.10 and 788,458.60 is: 1,182,687.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    872,439.40 : 1,308,659.10 = 788,458.60 : x
  2. Step 2: Convert to fraction form
    872,439.40/1,308,659.10 = 788,458.60/x
  3. Step 3: Cross multiply
    872,439.40x = 1,308,659.10 × 788,458.60
  4. Step 4: Simplify right side
    872,439.40x = 1,031,823,521,863.26
  5. Step 5: Solve for x
    x = 1,031,823,521,863.26/872,439.40
  6. Step 6: Final answer
    x = 1,182,687.90

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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.