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Finding the Fourth Proportional to 654,762.76, 903,581.94 and 386,490.76

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Solution

The fourth proportional to 654,762.76, 903,581.94 and 386,490.76 is: 533,362.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    654,762.76 : 903,581.94 = 386,490.76 : x
  2. Step 2: Convert to fraction form
    654,762.76/903,581.94 = 386,490.76/x
  3. Step 3: Cross multiply
    654,762.76x = 903,581.94 × 386,490.76
  4. Step 4: Simplify right side
    654,762.76x = 349,226,070,712.87
  5. Step 5: Solve for x
    x = 349,226,070,712.87/654,762.76
  6. Step 6: Final answer
    x = 533,362.76

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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.