Home / 705,727.20-1,059,044.40-390,410.40

Finding the Fourth Proportional to 705,727.20, 1,059,044.40 and 390,410.40

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Solution

The fourth proportional to 705,727.20, 1,059,044.40 and 390,410.40 is: 585,866.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    705,727.20 : 1,059,044.40 = 390,410.40 : x
  2. Step 2: Convert to fraction form
    705,727.20/1,059,044.40 = 390,410.40/x
  3. Step 3: Cross multiply
    705,727.20x = 1,059,044.40 × 390,410.40
  4. Step 4: Simplify right side
    705,727.20x = 413,461,947,821.76
  5. Step 5: Solve for x
    x = 413,461,947,821.76/705,727.20
  6. Step 6: Final answer
    x = 585,866.53

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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.