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Finding the Fourth Proportional to 520,867.19, 785,204.78 and 486,147.08

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Solution

The fourth proportional to 520,867.19, 785,204.78 and 486,147.08 is: 732,864.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,867.19 : 785,204.78 = 486,147.08 : x
  2. Step 2: Convert to fraction form
    520,867.19/785,204.78 = 486,147.08/x
  3. Step 3: Cross multiply
    520,867.19x = 785,204.78 × 486,147.08
  4. Step 4: Simplify right side
    520,867.19x = 381,725,010,531.32
  5. Step 5: Solve for x
    x = 381,725,010,531.32/520,867.19
  6. Step 6: Final answer
    x = 732,864.38

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.