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Finding the Fourth Proportional to 526,543.80, 789,815.70 and 313,967.40

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Solution

The fourth proportional to 526,543.80, 789,815.70 and 313,967.40 is: 470,951.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    526,543.80 : 789,815.70 = 313,967.40 : x
  2. Step 2: Convert to fraction form
    526,543.80/789,815.70 = 313,967.40/x
  3. Step 3: Cross multiply
    526,543.80x = 789,815.70 × 313,967.40
  4. Step 4: Simplify right side
    526,543.80x = 247,976,381,808.18
  5. Step 5: Solve for x
    x = 247,976,381,808.18/526,543.80
  6. Step 6: Final answer
    x = 470,951.10

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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.