Home / 787,813.40-1,182,011.70-314,838.20

Finding the Fourth Proportional to 787,813.40, 1,182,011.70 and 314,838.20

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Solution

The fourth proportional to 787,813.40, 1,182,011.70 and 314,838.20 is: 472,373.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    787,813.40 : 1,182,011.70 = 314,838.20 : x
  2. Step 2: Convert to fraction form
    787,813.40/1,182,011.70 = 314,838.20/x
  3. Step 3: Cross multiply
    787,813.40x = 1,182,011.70 × 314,838.20
  4. Step 4: Simplify right side
    787,813.40x = 372,142,436,006.94
  5. Step 5: Solve for x
    x = 372,142,436,006.94/787,813.40
  6. Step 6: Final answer
    x = 472,373.83

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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.