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Finding the Fourth Proportional to 614,663.10, 922,743.45 and 390,023.10

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Solution

The fourth proportional to 614,663.10, 922,743.45 and 390,023.10 is: 585,509.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    614,663.10 : 922,743.45 = 390,023.10 : x
  2. Step 2: Convert to fraction form
    614,663.10/922,743.45 = 390,023.10/x
  3. Step 3: Cross multiply
    614,663.10x = 922,743.45 × 390,023.10
  4. Step 4: Simplify right side
    614,663.10x = 359,891,260,873.70
  5. Step 5: Solve for x
    x = 359,891,260,873.70/614,663.10
  6. Step 6: Final answer
    x = 585,509.79

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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.