Home / 786,007.10-1,178,233.05-386,320.70

Finding the Fourth Proportional to 786,007.10, 1,178,233.05 and 386,320.70

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Solution

The fourth proportional to 786,007.10, 1,178,233.05 and 386,320.70 is: 579,098.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    786,007.10 : 1,178,233.05 = 386,320.70 : x
  2. Step 2: Convert to fraction form
    786,007.10/1,178,233.05 = 386,320.70/x
  3. Step 3: Cross multiply
    786,007.10x = 1,178,233.05 × 386,320.70
  4. Step 4: Simplify right side
    786,007.10x = 455,175,816,639.14
  5. Step 5: Solve for x
    x = 455,175,816,639.14/786,007.10
  6. Step 6: Final answer
    x = 579,098.86

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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.