Home / 820,101.60-1,230,152.40-811,807.20

Finding the Fourth Proportional to 820,101.60, 1,230,152.40 and 811,807.20

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Solution

The fourth proportional to 820,101.60, 1,230,152.40 and 811,807.20 is: 1,217,710.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    820,101.60 : 1,230,152.40 = 811,807.20 : x
  2. Step 2: Convert to fraction form
    820,101.60/1,230,152.40 = 811,807.20/x
  3. Step 3: Cross multiply
    820,101.60x = 1,230,152.40 × 811,807.20
  4. Step 4: Simplify right side
    820,101.60x = 998,646,575,417.28
  5. Step 5: Solve for x
    x = 998,646,575,417.28/820,101.60
  6. Step 6: Final answer
    x = 1,217,710.80

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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.