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Finding the Fourth Proportional to 517,913.60, 776,870.40 and 307,443.20

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Solution

The fourth proportional to 517,913.60, 776,870.40 and 307,443.20 is: 461,164.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    517,913.60 : 776,870.40 = 307,443.20 : x
  2. Step 2: Convert to fraction form
    517,913.60/776,870.40 = 307,443.20/x
  3. Step 3: Cross multiply
    517,913.60x = 776,870.40 × 307,443.20
  4. Step 4: Simplify right side
    517,913.60x = 238,843,521,761.28
  5. Step 5: Solve for x
    x = 238,843,521,761.28/517,913.60
  6. Step 6: Final answer
    x = 461,164.80

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Similar ratio
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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.