Home / 813,497.45-1,218,657.83-386,425.53

Finding the Fourth Proportional to 813,497.45, 1,218,657.83 and 386,425.53

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Solution

The fourth proportional to 813,497.45, 1,218,657.83 and 386,425.53 is: 578,883.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    813,497.45 : 1,218,657.83 = 386,425.53 : x
  2. Step 2: Convert to fraction form
    813,497.45/1,218,657.83 = 386,425.53/x
  3. Step 3: Cross multiply
    813,497.45x = 1,218,657.83 × 386,425.53
  4. Step 4: Simplify right side
    813,497.45x = 470,920,495,914.27
  5. Step 5: Solve for x
    x = 470,920,495,914.27/813,497.45
  6. Step 6: Final answer
    x = 578,883.80

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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.