Home / 557,521.02-767,972.16-449,789.40

Finding the Fourth Proportional to 557,521.02, 767,972.16 and 449,789.40

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Solution

The fourth proportional to 557,521.02, 767,972.16 and 449,789.40 is: 619,574.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    557,521.02 : 767,972.16 = 449,789.40 : x
  2. Step 2: Convert to fraction form
    557,521.02/767,972.16 = 449,789.40/x
  3. Step 3: Cross multiply
    557,521.02x = 767,972.16 × 449,789.40
  4. Step 4: Simplify right side
    557,521.02x = 345,425,737,063.10
  5. Step 5: Solve for x
    x = 345,425,737,063.10/557,521.02
  6. Step 6: Final answer
    x = 619,574.37

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1.5x scale

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.