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Finding the Fourth Proportional to 654,764.76, 903,584.70 and 386,492.76

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Solution

The fourth proportional to 654,764.76, 903,584.70 and 386,492.76 is: 533,365.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    654,764.76 : 903,584.70 = 386,492.76 : x
  2. Step 2: Convert to fraction form
    654,764.76/903,584.70 = 386,492.76/x
  3. Step 3: Cross multiply
    654,764.76x = 903,584.70 × 386,492.76
  4. Step 4: Simplify right side
    654,764.76x = 349,228,944,596.77
  5. Step 5: Solve for x
    x = 349,228,944,596.77/654,764.76
  6. Step 6: Final answer
    x = 533,365.52

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Double scale
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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.