Home / 858,256.68-1,287,386.10-297,291.12

Finding the Fourth Proportional to 858,256.68, 1,287,386.10 and 297,291.12

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Solution

The fourth proportional to 858,256.68, 1,287,386.10 and 297,291.12 is: 445,937.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    858,256.68 : 1,287,386.10 = 297,291.12 : x
  2. Step 2: Convert to fraction form
    858,256.68/1,287,386.10 = 297,291.12/x
  3. Step 3: Cross multiply
    858,256.68x = 1,287,386.10 × 297,291.12
  4. Step 4: Simplify right side
    858,256.68x = 382,728,455,541.43
  5. Step 5: Solve for x
    x = 382,728,455,541.43/858,256.68
  6. Step 6: Final answer
    x = 445,937.05

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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.