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Finding the Fourth Proportional to 561,207.40, 774,482.82 and 306,562.76

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Solution

The fourth proportional to 561,207.40, 774,482.82 and 306,562.76 is: 423,065.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    561,207.40 : 774,482.82 = 306,562.76 : x
  2. Step 2: Convert to fraction form
    561,207.40/774,482.82 = 306,562.76/x
  3. Step 3: Cross multiply
    561,207.40x = 774,482.82 × 306,562.76
  4. Step 4: Simplify right side
    561,207.40x = 237,427,590,871.78
  5. Step 5: Solve for x
    x = 237,427,590,871.78/561,207.40
  6. Step 6: Final answer
    x = 423,065.68

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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.