Home / 858,415.10-1,287,622.65-503,599.10

Finding the Fourth Proportional to 858,415.10, 1,287,622.65 and 503,599.10

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Solution

The fourth proportional to 858,415.10, 1,287,622.65 and 503,599.10 is: 755,398.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    858,415.10 : 1,287,622.65 = 503,599.10 : x
  2. Step 2: Convert to fraction form
    858,415.10/1,287,622.65 = 503,599.10/x
  3. Step 3: Cross multiply
    858,415.10x = 1,287,622.65 × 503,599.10
  4. Step 4: Simplify right side
    858,415.10x = 648,445,607,679.62
  5. Step 5: Solve for x
    x = 648,445,607,679.62/858,415.10
  6. Step 6: Final answer
    x = 755,398.65

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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.