Home / 492,255.83-679,374.91-288,384.55

Finding the Fourth Proportional to 492,255.83, 679,374.91 and 288,384.55

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Solution

The fourth proportional to 492,255.83, 679,374.91 and 288,384.55 is: 398,006.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    492,255.83 : 679,374.91 = 288,384.55 : x
  2. Step 2: Convert to fraction form
    492,255.83/679,374.91 = 288,384.55/x
  3. Step 3: Cross multiply
    492,255.83x = 679,374.91 × 288,384.55
  4. Step 4: Simplify right side
    492,255.83x = 195,921,230,185.17
  5. Step 5: Solve for x
    x = 195,921,230,185.17/492,255.83
  6. Step 6: Final answer
    x = 398,006.92

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.