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Finding the Fourth Proportional to 564,931.07, 779,602.19 and 306,806.21

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Solution

The fourth proportional to 564,931.07, 779,602.19 and 306,806.21 is: 423,391.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    564,931.07 : 779,602.19 = 306,806.21 : x
  2. Step 2: Convert to fraction form
    564,931.07/779,602.19 = 306,806.21/x
  3. Step 3: Cross multiply
    564,931.07x = 779,602.19 × 306,806.21
  4. Step 4: Simplify right side
    564,931.07x = 239,186,787,789.56
  5. Step 5: Solve for x
    x = 239,186,787,789.56/564,931.07
  6. Step 6: Final answer
    x = 423,391.10

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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.