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Finding the Fourth Proportional to 660,293.40, 987,815.70 and 572,521.80

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Solution

The fourth proportional to 660,293.40, 987,815.70 and 572,521.80 is: 856,507.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,293.40 : 987,815.70 = 572,521.80 : x
  2. Step 2: Convert to fraction form
    660,293.40/987,815.70 = 572,521.80/x
  3. Step 3: Cross multiply
    660,293.40x = 987,815.70 × 572,521.80
  4. Step 4: Simplify right side
    660,293.40x = 565,546,022,632.26
  5. Step 5: Solve for x
    x = 565,546,022,632.26/660,293.40
  6. Step 6: Final answer
    x = 856,507.16

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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.