Home / 709,910.02-979,669.65-387,618.58

Finding the Fourth Proportional to 709,910.02, 979,669.65 and 387,618.58

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Solution

The fourth proportional to 709,910.02, 979,669.65 and 387,618.58 is: 534,910.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    709,910.02 : 979,669.65 = 387,618.58 : x
  2. Step 2: Convert to fraction form
    709,910.02/979,669.65 = 387,618.58/x
  3. Step 3: Cross multiply
    709,910.02x = 979,669.65 × 387,618.58
  4. Step 4: Simplify right side
    709,910.02x = 379,738,158,602.10
  5. Step 5: Solve for x
    x = 379,738,158,602.10/709,910.02
  6. Step 6: Final answer
    x = 534,910.27

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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.