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Finding the Fourth Proportional to 659,901.80, 989,885.10 and 344,973.80

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Solution

The fourth proportional to 659,901.80, 989,885.10 and 344,973.80 is: 517,477.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    659,901.80 : 989,885.10 = 344,973.80 : x
  2. Step 2: Convert to fraction form
    659,901.80/989,885.10 = 344,973.80/x
  3. Step 3: Cross multiply
    659,901.80x = 989,885.10 × 344,973.80
  4. Step 4: Simplify right side
    659,901.80x = 341,484,424,510.38
  5. Step 5: Solve for x
    x = 341,484,424,510.38/659,901.80
  6. Step 6: Final answer
    x = 517,477.64

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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.