Home / 689,487.36-951,483.42-387,681.36

Finding the Fourth Proportional to 689,487.36, 951,483.42 and 387,681.36

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Solution

The fourth proportional to 689,487.36, 951,483.42 and 387,681.36 is: 534,995.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    689,487.36 : 951,483.42 = 387,681.36 : x
  2. Step 2: Convert to fraction form
    689,487.36/951,483.42 = 387,681.36/x
  3. Step 3: Cross multiply
    689,487.36x = 951,483.42 × 387,681.36
  4. Step 4: Simplify right side
    689,487.36x = 368,872,386,283.05
  5. Step 5: Solve for x
    x = 368,872,386,283.05/689,487.36
  6. Step 6: Final answer
    x = 534,995.14

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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.