Home / 780,057.10-1,170,085.65-306,585.10

Finding the Fourth Proportional to 780,057.10, 1,170,085.65 and 306,585.10

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Solution

The fourth proportional to 780,057.10, 1,170,085.65 and 306,585.10 is: 459,877.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    780,057.10 : 1,170,085.65 = 306,585.10 : x
  2. Step 2: Convert to fraction form
    780,057.10/1,170,085.65 = 306,585.10/x
  3. Step 3: Cross multiply
    780,057.10x = 1,170,085.65 × 306,585.10
  4. Step 4: Simplify right side
    780,057.10x = 358,730,826,013.82
  5. Step 5: Solve for x
    x = 358,730,826,013.82/780,057.10
  6. Step 6: Final answer
    x = 459,877.65

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Double scale
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Similar ratio
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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.