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Finding the Fourth Proportional to 700,089.48, 966,143.03 and 428,152.50

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Solution

The fourth proportional to 700,089.48, 966,143.03 and 428,152.50 is: 590,862.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    700,089.48 : 966,143.03 = 428,152.50 : x
  2. Step 2: Convert to fraction form
    700,089.48/966,143.03 = 428,152.50/x
  3. Step 3: Cross multiply
    700,089.48x = 966,143.03 × 428,152.50
  4. Step 4: Simplify right side
    700,089.48x = 413,656,551,511.31
  5. Step 5: Solve for x
    x = 413,656,551,511.31/700,089.48
  6. Step 6: Final answer
    x = 590,862.40

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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.