Home / 687,896.56-1,032,243.36-288,501.76

Finding the Fourth Proportional to 687,896.56, 1,032,243.36 and 288,501.76

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Solution

The fourth proportional to 687,896.56, 1,032,243.36 and 288,501.76 is: 432,919.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,896.56 : 1,032,243.36 = 288,501.76 : x
  2. Step 2: Convert to fraction form
    687,896.56/1,032,243.36 = 288,501.76/x
  3. Step 3: Cross multiply
    687,896.56x = 1,032,243.36 × 288,501.76
  4. Step 4: Simplify right side
    687,896.56x = 297,804,026,108.31
  5. Step 5: Solve for x
    x = 297,804,026,108.31/687,896.56
  6. Step 6: Final answer
    x = 432,919.78

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.