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Finding the Fourth Proportional to 589,620.20, 884,430.30 and 400,663.40

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Solution

The fourth proportional to 589,620.20, 884,430.30 and 400,663.40 is: 600,995.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    589,620.20 : 884,430.30 = 400,663.40 : x
  2. Step 2: Convert to fraction form
    589,620.20/884,430.30 = 400,663.40/x
  3. Step 3: Cross multiply
    589,620.20x = 884,430.30 × 400,663.40
  4. Step 4: Simplify right side
    589,620.20x = 354,358,851,061.02
  5. Step 5: Solve for x
    x = 354,358,851,061.02/589,620.20
  6. Step 6: Final answer
    x = 600,995.10

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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.