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Finding the Fourth Proportional to 710,282.84, 980,153.76 and 387,930.67

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Solution

The fourth proportional to 710,282.84, 980,153.76 and 387,930.67 is: 535,324.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    710,282.84 : 980,153.76 = 387,930.67 : x
  2. Step 2: Convert to fraction form
    710,282.84/980,153.76 = 387,930.67/x
  3. Step 3: Cross multiply
    710,282.84x = 980,153.76 × 387,930.67
  4. Step 4: Simplify right side
    710,282.84x = 380,231,703,824.18
  5. Step 5: Solve for x
    x = 380,231,703,824.18/710,282.84
  6. Step 6: Final answer
    x = 535,324.36

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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.