Home / 781,822.01-1,078,358.14-717,498.93

Finding the Fourth Proportional to 781,822.01, 1,078,358.14 and 717,498.93

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Solution

The fourth proportional to 781,822.01, 1,078,358.14 and 717,498.93 is: 989,638.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    781,822.01 : 1,078,358.14 = 717,498.93 : x
  2. Step 2: Convert to fraction form
    781,822.01/1,078,358.14 = 717,498.93/x
  3. Step 3: Cross multiply
    781,822.01x = 1,078,358.14 × 717,498.93
  4. Step 4: Simplify right side
    781,822.01x = 773,720,811,606.79
  5. Step 5: Solve for x
    x = 773,720,811,606.79/781,822.01
  6. Step 6: Final answer
    x = 989,638.05

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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.