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Finding the Fourth Proportional to 522,869.80, 783,138.30 and 404,156.20

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Solution

The fourth proportional to 522,869.80, 783,138.30 and 404,156.20 is: 605,332.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    522,869.80 : 783,138.30 = 404,156.20 : x
  2. Step 2: Convert to fraction form
    522,869.80/783,138.30 = 404,156.20/x
  3. Step 3: Cross multiply
    522,869.80x = 783,138.30 × 404,156.20
  4. Step 4: Simplify right side
    522,869.80x = 316,510,199,402.46
  5. Step 5: Solve for x
    x = 316,510,199,402.46/522,869.80
  6. Step 6: Final answer
    x = 605,332.72

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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.