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Finding the Fourth Proportional to 659,602.40, 989,864.40 and 285,893.60

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Solution

The fourth proportional to 659,602.40, 989,864.40 and 285,893.60 is: 429,040.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    659,602.40 : 989,864.40 = 285,893.60 : x
  2. Step 2: Convert to fraction form
    659,602.40/989,864.40 = 285,893.60/x
  3. Step 3: Cross multiply
    659,602.40x = 989,864.40 × 285,893.60
  4. Step 4: Simplify right side
    659,602.40x = 282,995,896,827.84
  5. Step 5: Solve for x
    x = 282,995,896,827.84/659,602.40
  6. Step 6: Final answer
    x = 429,040.13

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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.