Home / 744,780.20-1,117,316.10-318,315.20

Finding the Fourth Proportional to 744,780.20, 1,117,316.10 and 318,315.20

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Solution

The fourth proportional to 744,780.20, 1,117,316.10 and 318,315.20 is: 477,535.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    744,780.20 : 1,117,316.10 = 318,315.20 : x
  2. Step 2: Convert to fraction form
    744,780.20/1,117,316.10 = 318,315.20/x
  3. Step 3: Cross multiply
    744,780.20x = 1,117,316.10 × 318,315.20
  4. Step 4: Simplify right side
    744,780.20x = 355,658,697,834.72
  5. Step 5: Solve for x
    x = 355,658,697,834.72/744,780.20
  6. Step 6: Final answer
    x = 477,535.11

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Double scale
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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.