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Finding the Fourth Proportional to 709,996.96, 979,803.84 and 387,710.92

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Solution

The fourth proportional to 709,996.96, 979,803.84 and 387,710.92 is: 535,045.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    709,996.96 : 979,803.84 = 387,710.92 : x
  2. Step 2: Convert to fraction form
    709,996.96/979,803.84 = 387,710.92/x
  3. Step 3: Cross multiply
    709,996.96x = 979,803.84 × 387,710.92
  4. Step 4: Simplify right side
    709,996.96x = 379,880,648,225.93
  5. Step 5: Solve for x
    x = 379,880,648,225.93/709,996.96
  6. Step 6: Final answer
    x = 535,045.46

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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.