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Finding the Fourth Proportional to 672,657.96, 928,225.80 and 385,976.28

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Solution

The fourth proportional to 672,657.96, 928,225.80 and 385,976.28 is: 532,623.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    672,657.96 : 928,225.80 = 385,976.28 : x
  2. Step 2: Convert to fraction form
    672,657.96/928,225.80 = 385,976.28/x
  3. Step 3: Cross multiply
    672,657.96x = 928,225.80 × 385,976.28
  4. Step 4: Simplify right side
    672,657.96x = 358,273,141,284.02
  5. Step 5: Solve for x
    x = 358,273,141,284.02/672,657.96
  6. Step 6: Final answer
    x = 532,623.06

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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.