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Finding the Fourth Proportional to 651,200.80, 976,801.20 and 371,264.80

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Solution

The fourth proportional to 651,200.80, 976,801.20 and 371,264.80 is: 556,897.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    651,200.80 : 976,801.20 = 371,264.80 : x
  2. Step 2: Convert to fraction form
    651,200.80/976,801.20 = 371,264.80/x
  3. Step 3: Cross multiply
    651,200.80x = 976,801.20 × 371,264.80
  4. Step 4: Simplify right side
    651,200.80x = 362,651,902,157.76
  5. Step 5: Solve for x
    x = 362,651,902,157.76/651,200.80
  6. Step 6: Final answer
    x = 556,897.20

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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.