Home / 711,107.20-1,066,660.80-653,046.40

Finding the Fourth Proportional to 711,107.20, 1,066,660.80 and 653,046.40

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Solution

The fourth proportional to 711,107.20, 1,066,660.80 and 653,046.40 is: 979,569.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    711,107.20 : 1,066,660.80 = 653,046.40 : x
  2. Step 2: Convert to fraction form
    711,107.20/1,066,660.80 = 653,046.40/x
  3. Step 3: Cross multiply
    711,107.20x = 1,066,660.80 × 653,046.40
  4. Step 4: Simplify right side
    711,107.20x = 696,578,995,461.12
  5. Step 5: Solve for x
    x = 696,578,995,461.12/711,107.20
  6. Step 6: Final answer
    x = 979,569.60

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.