Home / 457,658,973.60-686,488,460.40-212,015,133.60

Finding the Fourth Proportional to 457,658,973.60, 686,488,460.40 and 212,015,133.60

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Solution

The fourth proportional to 457,658,973.60, 686,488,460.40 and 212,015,133.60 is: 318,022,700.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    457,658,973.60 : 686,488,460.40 = 212,015,133.60 : x
  2. Step 2: Convert to fraction form
    457,658,973.60/686,488,460.40 = 212,015,133.60/x
  3. Step 3: Cross multiply
    457,658,973.60x = 686,488,460.40 × 212,015,133.60
  4. Step 4: Simplify right side
    457,658,973.60x = 145,545,942,646,564,288
  5. Step 5: Solve for x
    x = 145,545,942,646,564,288/457,658,973.60
  6. Step 6: Final answer
    x = 318,022,700.40

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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.