Home / 778,580.20-1,167,870.30-478,086.40

Finding the Fourth Proportional to 778,580.20, 1,167,870.30 and 478,086.40

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Solution

The fourth proportional to 778,580.20, 1,167,870.30 and 478,086.40 is: 717,129.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    778,580.20 : 1,167,870.30 = 478,086.40 : x
  2. Step 2: Convert to fraction form
    778,580.20/1,167,870.30 = 478,086.40/x
  3. Step 3: Cross multiply
    778,580.20x = 1,167,870.30 × 478,086.40
  4. Step 4: Simplify right side
    778,580.20x = 558,342,907,393.92
  5. Step 5: Solve for x
    x = 558,342,907,393.92/778,580.20
  6. Step 6: Final answer
    x = 717,129.60

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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.