Home / 921,641.07-1,271,739.15-513,694.50

Finding the Fourth Proportional to 921,641.07, 1,271,739.15 and 513,694.50

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Solution

The fourth proportional to 921,641.07, 1,271,739.15 and 513,694.50 is: 708,828.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    921,641.07 : 1,271,739.15 = 513,694.50 : x
  2. Step 2: Convert to fraction form
    921,641.07/1,271,739.15 = 513,694.50/x
  3. Step 3: Cross multiply
    921,641.07x = 1,271,739.15 × 513,694.50
  4. Step 4: Simplify right side
    921,641.07x = 653,285,406,789.68
  5. Step 5: Solve for x
    x = 653,285,406,789.68/921,641.07
  6. Step 6: Final answer
    x = 708,828.45

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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.