Home / 871,565.40-1,307,348.10-310,397.40

Finding the Fourth Proportional to 871,565.40, 1,307,348.10 and 310,397.40

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Solution

The fourth proportional to 871,565.40, 1,307,348.10 and 310,397.40 is: 465,596.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    871,565.40 : 1,307,348.10 = 310,397.40 : x
  2. Step 2: Convert to fraction form
    871,565.40/1,307,348.10 = 310,397.40/x
  3. Step 3: Cross multiply
    871,565.40x = 1,307,348.10 × 310,397.40
  4. Step 4: Simplify right side
    871,565.40x = 405,797,451,134.94
  5. Step 5: Solve for x
    x = 405,797,451,134.94/871,565.40
  6. Step 6: Final answer
    x = 465,596.10

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Double scale
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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.