Home / 778,749.40-1,166,280.90-528,074.20

Finding the Fourth Proportional to 778,749.40, 1,166,280.90 and 528,074.20

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Solution

The fourth proportional to 778,749.40, 1,166,280.90 and 528,074.20 is: 790,861.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    778,749.40 : 1,166,280.90 = 528,074.20 : x
  2. Step 2: Convert to fraction form
    778,749.40/1,166,280.90 = 528,074.20/x
  3. Step 3: Cross multiply
    778,749.40x = 1,166,280.90 × 528,074.20
  4. Step 4: Simplify right side
    778,749.40x = 615,882,853,242.78
  5. Step 5: Solve for x
    x = 615,882,853,242.78/778,749.40
  6. Step 6: Final answer
    x = 790,861.42

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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.