Home / 690,186.40-1,034,929.52-315,888.80

Finding the Fourth Proportional to 690,186.40, 1,034,929.52 and 315,888.80

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Solution

The fourth proportional to 690,186.40, 1,034,929.52 and 315,888.80 is: 473,672.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    690,186.40 : 1,034,929.52 = 315,888.80 : x
  2. Step 2: Convert to fraction form
    690,186.40/1,034,929.52 = 315,888.80/x
  3. Step 3: Cross multiply
    690,186.40x = 1,034,929.52 × 315,888.80
  4. Step 4: Simplify right side
    690,186.40x = 326,922,644,157.38
  5. Step 5: Solve for x
    x = 326,922,644,157.38/690,186.40
  6. Step 6: Final answer
    x = 473,672.97

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1.5x scale

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.