Home / 709,971.04-979,799.88-387,711.10

Finding the Fourth Proportional to 709,971.04, 979,799.88 and 387,711.10

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Solution

The fourth proportional to 709,971.04, 979,799.88 and 387,711.10 is: 535,063.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    709,971.04 : 979,799.88 = 387,711.10 : x
  2. Step 2: Convert to fraction form
    709,971.04/979,799.88 = 387,711.10/x
  3. Step 3: Cross multiply
    709,971.04x = 979,799.88 × 387,711.10
  4. Step 4: Simplify right side
    709,971.04x = 379,879,289,254.67
  5. Step 5: Solve for x
    x = 379,879,289,254.67/709,971.04
  6. Step 6: Final answer
    x = 535,063.08

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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.