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Finding the Fourth Proportional to 706,876.80, 987,528 and 706,876.80

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Solution

The fourth proportional to 706,876.80, 987,528 and 706,876.80 is: 987,528

Step by Step Solution

  1. Step 1: Write the proportion equation
    706,876.80 : 987,528 = 706,876.80 : x
  2. Step 2: Convert to fraction form
    706,876.80/987,528 = 706,876.80/x
  3. Step 3: Cross multiply
    706,876.80x = 987,528 × 706,876.80
  4. Step 4: Simplify right side
    706,876.80x = 698,060,632,550.40
  5. Step 5: Solve for x
    x = 698,060,632,550.40/706,876.80
  6. Step 6: Final answer
    x = 987,528

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.