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Finding the Fourth Proportional to 501,712.62, 692,363.66 and 286,856.88

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Solution

The fourth proportional to 501,712.62, 692,363.66 and 286,856.88 is: 395,862.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    501,712.62 : 692,363.66 = 286,856.88 : x
  2. Step 2: Convert to fraction form
    501,712.62/692,363.66 = 286,856.88/x
  3. Step 3: Cross multiply
    501,712.62x = 692,363.66 × 286,856.88
  4. Step 4: Simplify right side
    501,712.62x = 198,609,277,898.70
  5. Step 5: Solve for x
    x = 198,609,277,898.70/501,712.62
  6. Step 6: Final answer
    x = 395,862.63

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1.5x scale

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.