Home / 498,856-688,436.40-272,516.08

Finding the Fourth Proportional to 498,856, 688,436.40 and 272,516.08

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Solution

The fourth proportional to 498,856, 688,436.40 and 272,516.08 is: 376,080.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    498,856 : 688,436.40 = 272,516.08 : x
  2. Step 2: Convert to fraction form
    498,856/688,436.40 = 272,516.08/x
  3. Step 3: Cross multiply
    498,856x = 688,436.40 × 272,516.08
  4. Step 4: Simplify right side
    498,856x = 187,609,989,057.31
  5. Step 5: Solve for x
    x = 187,609,989,057.31/498,856
  6. Step 6: Final answer
    x = 376,080.45

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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.