Home / 709,939.04-979,718.94-387,656.24

Finding the Fourth Proportional to 709,939.04, 979,718.94 and 387,656.24

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Solution

The fourth proportional to 709,939.04, 979,718.94 and 387,656.24 is: 534,967.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    709,939.04 : 979,718.94 = 387,656.24 : x
  2. Step 2: Convert to fraction form
    709,939.04/979,718.94 = 387,656.24/x
  3. Step 3: Cross multiply
    709,939.04x = 979,718.94 × 387,656.24
  4. Step 4: Simplify right side
    709,939.04x = 379,794,160,537.19
  5. Step 5: Solve for x
    x = 379,794,160,537.19/709,939.04
  6. Step 6: Final answer
    x = 534,967.28

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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.