Home / 690,708.48-1,036,210.95-391,332.48

Finding the Fourth Proportional to 690,708.48, 1,036,210.95 and 391,332.48

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Solution

The fourth proportional to 690,708.48, 1,036,210.95 and 391,332.48 is: 587,082.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    690,708.48 : 1,036,210.95 = 391,332.48 : x
  2. Step 2: Convert to fraction form
    690,708.48/1,036,210.95 = 391,332.48/x
  3. Step 3: Cross multiply
    690,708.48x = 1,036,210.95 × 391,332.48
  4. Step 4: Simplify right side
    690,708.48x = 405,503,000,866.66
  5. Step 5: Solve for x
    x = 405,503,000,866.66/690,708.48
  6. Step 6: Final answer
    x = 587,082.70

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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.