Home / 487,038.30-671,677.65-305,767.14

Finding the Fourth Proportional to 487,038.30, 671,677.65 and 305,767.14

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Solution

The fourth proportional to 487,038.30, 671,677.65 and 305,767.14 is: 421,685.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,038.30 : 671,677.65 = 305,767.14 : x
  2. Step 2: Convert to fraction form
    487,038.30/671,677.65 = 305,767.14/x
  3. Step 3: Cross multiply
    487,038.30x = 671,677.65 × 305,767.14
  4. Step 4: Simplify right side
    487,038.30x = 205,376,954,042.42
  5. Step 5: Solve for x
    x = 205,376,954,042.42/487,038.30
  6. Step 6: Final answer
    x = 421,685.43

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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.