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Finding the Fourth Proportional to 575,726.80, 863,590.20 and 435,758.80

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Solution

The fourth proportional to 575,726.80, 863,590.20 and 435,758.80 is: 653,638.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    575,726.80 : 863,590.20 = 435,758.80 : x
  2. Step 2: Convert to fraction form
    575,726.80/863,590.20 = 435,758.80/x
  3. Step 3: Cross multiply
    575,726.80x = 863,590.20 × 435,758.80
  4. Step 4: Simplify right side
    575,726.80x = 376,317,029,243.76
  5. Step 5: Solve for x
    x = 376,317,029,243.76/575,726.80
  6. Step 6: Final answer
    x = 653,638.20

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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.