Home / 578,024.80-865,808.40-378,959.20

Finding the Fourth Proportional to 578,024.80, 865,808.40 and 378,959.20

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Solution

The fourth proportional to 578,024.80, 865,808.40 and 378,959.20 is: 567,633.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    578,024.80 : 865,808.40 = 378,959.20 : x
  2. Step 2: Convert to fraction form
    578,024.80/865,808.40 = 378,959.20/x
  3. Step 3: Cross multiply
    578,024.80x = 865,808.40 × 378,959.20
  4. Step 4: Simplify right side
    578,024.80x = 328,106,058,617.28
  5. Step 5: Solve for x
    x = 328,106,058,617.28/578,024.80
  6. Step 6: Final answer
    x = 567,633.19

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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.