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Finding the Fourth Proportional to 660,283.40, 987,800.70 and 572,511.80

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Solution

The fourth proportional to 660,283.40, 987,800.70 and 572,511.80 is: 856,492.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,283.40 : 987,800.70 = 572,511.80 : x
  2. Step 2: Convert to fraction form
    660,283.40/987,800.70 = 572,511.80/x
  3. Step 3: Cross multiply
    660,283.40x = 987,800.70 × 572,511.80
  4. Step 4: Simplify right side
    660,283.40x = 565,527,556,798.26
  5. Step 5: Solve for x
    x = 565,527,556,798.26/660,283.40
  6. Step 6: Final answer
    x = 856,492.16

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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.