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Finding the Fourth Proportional to 660,284.40, 987,802.20 and 572,512.80

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Solution

The fourth proportional to 660,284.40, 987,802.20 and 572,512.80 is: 856,493.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,284.40 : 987,802.20 = 572,512.80 : x
  2. Step 2: Convert to fraction form
    660,284.40/987,802.20 = 572,512.80/x
  3. Step 3: Cross multiply
    660,284.40x = 987,802.20 × 572,512.80
  4. Step 4: Simplify right side
    660,284.40x = 565,529,403,368.16
  5. Step 5: Solve for x
    x = 565,529,403,368.16/660,284.40
  6. Step 6: Final answer
    x = 856,493.66

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1.5x scale

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.