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Finding the Fourth Proportional to 564,767.48, 779,373.51 and 306,638.75

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Solution

The fourth proportional to 564,767.48, 779,373.51 and 306,638.75 is: 423,158.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    564,767.48 : 779,373.51 = 306,638.75 : x
  2. Step 2: Convert to fraction form
    564,767.48/779,373.51 = 306,638.75/x
  3. Step 3: Cross multiply
    564,767.48x = 779,373.51 × 306,638.75
  4. Step 4: Simplify right side
    564,767.48x = 238,986,118,889.51
  5. Step 5: Solve for x
    x = 238,986,118,889.51/564,767.48
  6. Step 6: Final answer
    x = 423,158.43

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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.