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Finding the Fourth Proportional to 778,894.60, 1,168,341.90 and 478,400.80

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Solution

The fourth proportional to 778,894.60, 1,168,341.90 and 478,400.80 is: 717,601.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    778,894.60 : 1,168,341.90 = 478,400.80 : x
  2. Step 2: Convert to fraction form
    778,894.60/1,168,341.90 = 478,400.80/x
  3. Step 3: Cross multiply
    778,894.60x = 1,168,341.90 × 478,400.80
  4. Step 4: Simplify right side
    778,894.60x = 558,935,699,633.52
  5. Step 5: Solve for x
    x = 558,935,699,633.52/778,894.60
  6. Step 6: Final answer
    x = 717,601.20

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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.