Home / 425,823.20-638,734.80-284,818.40

Finding the Fourth Proportional to 425,823.20, 638,734.80 and 284,818.40

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Solution

The fourth proportional to 425,823.20, 638,734.80 and 284,818.40 is: 427,227.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,823.20 : 638,734.80 = 284,818.40 : x
  2. Step 2: Convert to fraction form
    425,823.20/638,734.80 = 284,818.40/x
  3. Step 3: Cross multiply
    425,823.20x = 638,734.80 × 284,818.40
  4. Step 4: Simplify right side
    425,823.20x = 181,923,423,760.32
  5. Step 5: Solve for x
    x = 181,923,423,760.32/425,823.20
  6. Step 6: Final answer
    x = 427,227.60

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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.