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Finding the Fourth Proportional to 710,219.28, 980,096.08 and 387,929.28

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Solution

The fourth proportional to 710,219.28, 980,096.08 and 387,929.28 is: 535,338.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    710,219.28 : 980,096.08 = 387,929.28 : x
  2. Step 2: Convert to fraction form
    710,219.28/980,096.08 = 387,929.28/x
  3. Step 3: Cross multiply
    710,219.28x = 980,096.08 × 387,929.28
  4. Step 4: Simplify right side
    710,219.28x = 380,207,966,645.22
  5. Step 5: Solve for x
    x = 380,207,966,645.22/710,219.28
  6. Step 6: Final answer
    x = 535,338.84

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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.