Home / 564,482.20-778,982.70-309,837.72

Finding the Fourth Proportional to 564,482.20, 778,982.70 and 309,837.72

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Solution

The fourth proportional to 564,482.20, 778,982.70 and 309,837.72 is: 427,574.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    564,482.20 : 778,982.70 = 309,837.72 : x
  2. Step 2: Convert to fraction form
    564,482.20/778,982.70 = 309,837.72/x
  3. Step 3: Cross multiply
    564,482.20x = 778,982.70 × 309,837.72
  4. Step 4: Simplify right side
    564,482.20x = 241,358,223,687.44
  5. Step 5: Solve for x
    x = 241,358,223,687.44/564,482.20
  6. Step 6: Final answer
    x = 427,574.55

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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.