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Finding the Fourth Proportional to 636,391.56, 878,213.23 and 473,775.15

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Solution

The fourth proportional to 636,391.56, 878,213.23 and 473,775.15 is: 653,804.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    636,391.56 : 878,213.23 = 473,775.15 : x
  2. Step 2: Convert to fraction form
    636,391.56/878,213.23 = 473,775.15/x
  3. Step 3: Cross multiply
    636,391.56x = 878,213.23 × 473,775.15
  4. Step 4: Simplify right side
    636,391.56x = 416,075,603,590.80
  5. Step 5: Solve for x
    x = 416,075,603,590.80/636,391.56
  6. Step 6: Final answer
    x = 653,804.40

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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.