Home / 858,981.70-1,288,472.55-784,186.30

Finding the Fourth Proportional to 858,981.70, 1,288,472.55 and 784,186.30

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Solution

The fourth proportional to 858,981.70, 1,288,472.55 and 784,186.30 is: 1,176,279.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    858,981.70 : 1,288,472.55 = 784,186.30 : x
  2. Step 2: Convert to fraction form
    858,981.70/1,288,472.55 = 784,186.30/x
  3. Step 3: Cross multiply
    858,981.70x = 1,288,472.55 × 784,186.30
  4. Step 4: Simplify right side
    858,981.70x = 1,010,402,521,636.07
  5. Step 5: Solve for x
    x = 1,010,402,521,636.07/858,981.70
  6. Step 6: Final answer
    x = 1,176,279.45

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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.