Home / 1,120,688.10-1,680,011.55-410,544.90

Finding the Fourth Proportional to 1,120,688.10, 1,680,011.55 and 410,544.90

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Solution

The fourth proportional to 1,120,688.10, 1,680,011.55 and 410,544.90 is: 615,443.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,120,688.10 : 1,680,011.55 = 410,544.90 : x
  2. Step 2: Convert to fraction form
    1,120,688.10/1,680,011.55 = 410,544.90/x
  3. Step 3: Cross multiply
    1,120,688.10x = 1,680,011.55 × 410,544.90
  4. Step 4: Simplify right side
    1,120,688.10x = 689,720,173,793.60
  5. Step 5: Solve for x
    x = 689,720,173,793.60/1,120,688.10
  6. Step 6: Final answer
    x = 615,443.47

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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.