Home / 709,923.46-979,690.50-387,631.25

Finding the Fourth Proportional to 709,923.46, 979,690.50 and 387,631.25

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Solution

The fourth proportional to 709,923.46, 979,690.50 and 387,631.25 is: 534,929.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    709,923.46 : 979,690.50 = 387,631.25 : x
  2. Step 2: Convert to fraction form
    709,923.46/979,690.50 = 387,631.25/x
  3. Step 3: Cross multiply
    709,923.46x = 979,690.50 × 387,631.25
  4. Step 4: Simplify right side
    709,923.46x = 379,758,655,204.00
  5. Step 5: Solve for x
    x = 379,758,655,204.00/709,923.46
  6. Step 6: Final answer
    x = 534,929.01

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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.