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Finding the Fourth Proportional to 555,576.06, 766,692.28 and 310,560.76

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Solution

The fourth proportional to 555,576.06, 766,692.28 and 310,560.76 is: 428,572.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    555,576.06 : 766,692.28 = 310,560.76 : x
  2. Step 2: Convert to fraction form
    555,576.06/766,692.28 = 310,560.76/x
  3. Step 3: Cross multiply
    555,576.06x = 766,692.28 × 310,560.76
  4. Step 4: Simplify right side
    555,576.06x = 238,104,537,162.93
  5. Step 5: Solve for x
    x = 238,104,537,162.93/555,576.06
  6. Step 6: Final answer
    x = 428,572.35

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.