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Finding the Fourth Proportional to 614,856.30, 921,420.45 and 488,712.30

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Solution

The fourth proportional to 614,856.30, 921,420.45 and 488,712.30 is: 732,381.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    614,856.30 : 921,420.45 = 488,712.30 : x
  2. Step 2: Convert to fraction form
    614,856.30/921,420.45 = 488,712.30/x
  3. Step 3: Cross multiply
    614,856.30x = 921,420.45 × 488,712.30
  4. Step 4: Simplify right side
    614,856.30x = 450,309,507,386.54
  5. Step 5: Solve for x
    x = 450,309,507,386.54/614,856.30
  6. Step 6: Final answer
    x = 732,381.71

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1.5x scale

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.