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Finding the Fourth Proportional to 615,590.42, 923,710.64 and 436,830.98

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Solution

The fourth proportional to 615,590.42, 923,710.64 and 436,830.98 is: 655,477.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    615,590.42 : 923,710.64 = 436,830.98 : x
  2. Step 2: Convert to fraction form
    615,590.42/923,710.64 = 436,830.98/x
  3. Step 3: Cross multiply
    615,590.42x = 923,710.64 × 436,830.98
  4. Step 4: Simplify right side
    615,590.42x = 403,505,417,304.92
  5. Step 5: Solve for x
    x = 403,505,417,304.92/615,590.42
  6. Step 6: Final answer
    x = 655,477.10

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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.