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Finding the Fourth Proportional to 584,418.80, 876,628.20 and 489,940.40

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Solution

The fourth proportional to 584,418.80, 876,628.20 and 489,940.40 is: 734,910.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    584,418.80 : 876,628.20 = 489,940.40 : x
  2. Step 2: Convert to fraction form
    584,418.80/876,628.20 = 489,940.40/x
  3. Step 3: Cross multiply
    584,418.80x = 876,628.20 × 489,940.40
  4. Step 4: Simplify right side
    584,418.80x = 429,495,570,959.28
  5. Step 5: Solve for x
    x = 429,495,570,959.28/584,418.80
  6. Step 6: Final answer
    x = 734,910.60

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Double scale
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Similar ratio
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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.