Home / 778,857.70-1,168,614.60-424,126.30

Finding the Fourth Proportional to 778,857.70, 1,168,614.60 and 424,126.30

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Solution

The fourth proportional to 778,857.70, 1,168,614.60 and 424,126.30 is: 636,368.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    778,857.70 : 1,168,614.60 = 424,126.30 : x
  2. Step 2: Convert to fraction form
    778,857.70/1,168,614.60 = 424,126.30/x
  3. Step 3: Cross multiply
    778,857.70x = 1,168,614.60 × 424,126.30
  4. Step 4: Simplify right side
    778,857.70x = 495,640,186,423.98
  5. Step 5: Solve for x
    x = 495,640,186,423.98/778,857.70
  6. Step 6: Final answer
    x = 636,368.09

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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.