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Finding the Fourth Proportional to 575,617.80, 863,426.70 and 435,649.80

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Solution

The fourth proportional to 575,617.80, 863,426.70 and 435,649.80 is: 653,474.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    575,617.80 : 863,426.70 = 435,649.80 : x
  2. Step 2: Convert to fraction form
    575,617.80/863,426.70 = 435,649.80/x
  3. Step 3: Cross multiply
    575,617.80x = 863,426.70 × 435,649.80
  4. Step 4: Simplify right side
    575,617.80x = 376,151,669,169.66
  5. Step 5: Solve for x
    x = 376,151,669,169.66/575,617.80
  6. Step 6: Final answer
    x = 653,474.70

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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.