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Finding the Fourth Proportional to 778,873.10, 1,168,309.65 and 478,379.30

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Solution

The fourth proportional to 778,873.10, 1,168,309.65 and 478,379.30 is: 717,568.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    778,873.10 : 1,168,309.65 = 478,379.30 : x
  2. Step 2: Convert to fraction form
    778,873.10/1,168,309.65 = 478,379.30/x
  3. Step 3: Cross multiply
    778,873.10x = 1,168,309.65 × 478,379.30
  4. Step 4: Simplify right side
    778,873.10x = 558,895,152,550.25
  5. Step 5: Solve for x
    x = 558,895,152,550.25/778,873.10
  6. Step 6: Final answer
    x = 717,568.95

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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.