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Finding the Fourth Proportional to 760,659.75, 1,140,563.03 and 521,044.20

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Solution

The fourth proportional to 760,659.75, 1,140,563.03 and 521,044.20 is: 781,274.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    760,659.75 : 1,140,563.03 = 521,044.20 : x
  2. Step 2: Convert to fraction form
    760,659.75/1,140,563.03 = 521,044.20/x
  3. Step 3: Cross multiply
    760,659.75x = 1,140,563.03 × 521,044.20
  4. Step 4: Simplify right side
    760,659.75x = 594,283,748,910.71
  5. Step 5: Solve for x
    x = 594,283,748,910.71/760,659.75
  6. Step 6: Final answer
    x = 781,274.08

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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.