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Finding the Fourth Proportional to 660,535.65, 911,542.68 and 370,147.86

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Solution

The fourth proportional to 660,535.65, 911,542.68 and 370,147.86 is: 510,806.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,535.65 : 911,542.68 = 370,147.86 : x
  2. Step 2: Convert to fraction form
    660,535.65/911,542.68 = 370,147.86/x
  3. Step 3: Cross multiply
    660,535.65x = 911,542.68 × 370,147.86
  4. Step 4: Simplify right side
    660,535.65x = 337,405,572,300.67
  5. Step 5: Solve for x
    x = 337,405,572,300.67/660,535.65
  6. Step 6: Final answer
    x = 510,806.00

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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.