Home / 991,625.60-1,487,438.40-711,689.60

Finding the Fourth Proportional to 991,625.60, 1,487,438.40 and 711,689.60

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Solution

The fourth proportional to 991,625.60, 1,487,438.40 and 711,689.60 is: 1,067,534.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    991,625.60 : 1,487,438.40 = 711,689.60 : x
  2. Step 2: Convert to fraction form
    991,625.60/1,487,438.40 = 711,689.60/x
  3. Step 3: Cross multiply
    991,625.60x = 1,487,438.40 × 711,689.60
  4. Step 4: Simplify right side
    991,625.60x = 1,058,594,439,920.64
  5. Step 5: Solve for x
    x = 1,058,594,439,920.64/991,625.60
  6. Step 6: Final answer
    x = 1,067,534.40

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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.