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Finding the Fourth Proportional to 575,243.80, 862,865.70 and 486,670.30

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Solution

The fourth proportional to 575,243.80, 862,865.70 and 486,670.30 is: 730,005.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    575,243.80 : 862,865.70 = 486,670.30 : x
  2. Step 2: Convert to fraction form
    575,243.80/862,865.70 = 486,670.30/x
  3. Step 3: Cross multiply
    575,243.80x = 862,865.70 × 486,670.30
  4. Step 4: Simplify right side
    575,243.80x = 419,931,109,078.71
  5. Step 5: Solve for x
    x = 419,931,109,078.71/575,243.80
  6. Step 6: Final answer
    x = 730,005.45

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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.