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Finding the Fourth Proportional to 575,619.80, 863,429.70 and 435,651.80

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Solution

The fourth proportional to 575,619.80, 863,429.70 and 435,651.80 is: 653,477.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    575,619.80 : 863,429.70 = 435,651.80 : x
  2. Step 2: Convert to fraction form
    575,619.80/863,429.70 = 435,651.80/x
  3. Step 3: Cross multiply
    575,619.80x = 863,429.70 × 435,651.80
  4. Step 4: Simplify right side
    575,619.80x = 376,154,702,978.46
  5. Step 5: Solve for x
    x = 376,154,702,978.46/575,619.80
  6. Step 6: Final answer
    x = 653,477.70

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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.