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Finding the Fourth Proportional to 908,711.80, 1,363,067.70 and 435,153.40

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Solution

The fourth proportional to 908,711.80, 1,363,067.70 and 435,153.40 is: 652,730.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    908,711.80 : 1,363,067.70 = 435,153.40 : x
  2. Step 2: Convert to fraction form
    908,711.80/1,363,067.70 = 435,153.40/x
  3. Step 3: Cross multiply
    908,711.80x = 1,363,067.70 × 435,153.40
  4. Step 4: Simplify right side
    908,711.80x = 593,143,544,085.18
  5. Step 5: Solve for x
    x = 593,143,544,085.18/908,711.80
  6. Step 6: Final answer
    x = 652,730.10

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Similar ratio
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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.