Home / 651,121.20-976,681.80-384,744.60

Finding the Fourth Proportional to 651,121.20, 976,681.80 and 384,744.60

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Solution

The fourth proportional to 651,121.20, 976,681.80 and 384,744.60 is: 577,116.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    651,121.20 : 976,681.80 = 384,744.60 : x
  2. Step 2: Convert to fraction form
    651,121.20/976,681.80 = 384,744.60/x
  3. Step 3: Cross multiply
    651,121.20x = 976,681.80 × 384,744.60
  4. Step 4: Simplify right side
    651,121.20x = 375,773,048,468.28
  5. Step 5: Solve for x
    x = 375,773,048,468.28/651,121.20
  6. Step 6: Final answer
    x = 577,116.90

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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.