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Finding the Fourth Proportional to 498,547.80, 688,895.60 and 355,058.73

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Solution

The fourth proportional to 498,547.80, 688,895.60 and 355,058.73 is: 490,621.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    498,547.80 : 688,895.60 = 355,058.73 : x
  2. Step 2: Convert to fraction form
    498,547.80/688,895.60 = 355,058.73/x
  3. Step 3: Cross multiply
    498,547.80x = 688,895.60 × 355,058.73
  4. Step 4: Simplify right side
    498,547.80x = 244,598,395,063.29
  5. Step 5: Solve for x
    x = 244,598,395,063.29/498,547.80
  6. Step 6: Final answer
    x = 490,621.75

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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.