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Finding the Fourth Proportional to 561,211.92, 774,459.72 and 306,564.24

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Solution

The fourth proportional to 561,211.92, 774,459.72 and 306,564.24 is: 423,051.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    561,211.92 : 774,459.72 = 306,564.24 : x
  2. Step 2: Convert to fraction form
    561,211.92/774,459.72 = 306,564.24/x
  3. Step 3: Cross multiply
    561,211.92x = 774,459.72 × 306,564.24
  4. Step 4: Simplify right side
    561,211.92x = 237,421,655,472.41
  5. Step 5: Solve for x
    x = 237,421,655,472.41/561,211.92
  6. Step 6: Final answer
    x = 423,051.70

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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.