Home / 690,909.60-1,036,364.40-628,908.15

Finding the Fourth Proportional to 690,909.60, 1,036,364.40 and 628,908.15

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Solution

The fourth proportional to 690,909.60, 1,036,364.40 and 628,908.15 is: 943,362.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    690,909.60 : 1,036,364.40 = 628,908.15 : x
  2. Step 2: Convert to fraction form
    690,909.60/1,036,364.40 = 628,908.15/x
  3. Step 3: Cross multiply
    690,909.60x = 1,036,364.40 × 628,908.15
  4. Step 4: Simplify right side
    690,909.60x = 651,778,017,529.86
  5. Step 5: Solve for x
    x = 651,778,017,529.86/690,909.60
  6. Step 6: Final answer
    x = 943,362.23

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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.