Home / 987,291.60-1,480,937.40-644,807.40

Finding the Fourth Proportional to 987,291.60, 1,480,937.40 and 644,807.40

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Solution

The fourth proportional to 987,291.60, 1,480,937.40 and 644,807.40 is: 967,211.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    987,291.60 : 1,480,937.40 = 644,807.40 : x
  2. Step 2: Convert to fraction form
    987,291.60/1,480,937.40 = 644,807.40/x
  3. Step 3: Cross multiply
    987,291.60x = 1,480,937.40 × 644,807.40
  4. Step 4: Simplify right side
    987,291.60x = 954,919,394,456.76
  5. Step 5: Solve for x
    x = 954,919,394,456.76/987,291.60
  6. Step 6: Final answer
    x = 967,211.10

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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.