Home / 457,658,980.60-686,488,470.90-212,015,140.60

Finding the Fourth Proportional to 457,658,980.60, 686,488,470.90 and 212,015,140.60

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Solution

The fourth proportional to 457,658,980.60, 686,488,470.90 and 212,015,140.60 is: 318,022,710.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    457,658,980.60 : 686,488,470.90 = 212,015,140.60 : x
  2. Step 2: Convert to fraction form
    457,658,980.60/686,488,470.90 = 212,015,140.60/x
  3. Step 3: Cross multiply
    457,658,980.60x = 686,488,470.90 × 212,015,140.60
  4. Step 4: Simplify right side
    457,658,980.60x = 145,545,949,678,142,496
  5. Step 5: Solve for x
    x = 145,545,949,678,142,496/457,658,980.60
  6. Step 6: Final answer
    x = 318,022,710.90

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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.