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Finding the Fourth Proportional to 559,554.66, 772,157.88 and 317,805.48

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Solution

The fourth proportional to 559,554.66, 772,157.88 and 317,805.48 is: 438,555.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    559,554.66 : 772,157.88 = 317,805.48 : x
  2. Step 2: Convert to fraction form
    559,554.66/772,157.88 = 317,805.48/x
  3. Step 3: Cross multiply
    559,554.66x = 772,157.88 × 317,805.48
  4. Step 4: Simplify right side
    559,554.66x = 245,396,005,689.18
  5. Step 5: Solve for x
    x = 245,396,005,689.18/559,554.66
  6. Step 6: Final answer
    x = 438,555.91

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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.