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Finding the Fourth Proportional to 520,870.20, 785,209.31 and 486,150.09

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Solution

The fourth proportional to 520,870.20, 785,209.31 and 486,150.09 is: 732,868.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,870.20 : 785,209.31 = 486,150.09 : x
  2. Step 2: Convert to fraction form
    520,870.20/785,209.31 = 486,150.09/x
  3. Step 3: Cross multiply
    520,870.20x = 785,209.31 × 486,150.09
  4. Step 4: Simplify right side
    520,870.20x = 381,729,574,294.59
  5. Step 5: Solve for x
    x = 381,729,574,294.59/520,870.20
  6. Step 6: Final answer
    x = 732,868.91

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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.