Home / 499,538.19-689,444.28-371,328.15

Finding the Fourth Proportional to 499,538.19, 689,444.28 and 371,328.15

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Solution

The fourth proportional to 499,538.19, 689,444.28 and 371,328.15 is: 512,493.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    499,538.19 : 689,444.28 = 371,328.15 : x
  2. Step 2: Convert to fraction form
    499,538.19/689,444.28 = 371,328.15/x
  3. Step 3: Cross multiply
    499,538.19x = 689,444.28 × 371,328.15
  4. Step 4: Simplify right side
    499,538.19x = 256,010,069,020.48
  5. Step 5: Solve for x
    x = 256,010,069,020.48/499,538.19
  6. Step 6: Final answer
    x = 512,493.49

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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.