Home / 1,787,386.60-2,679,330.30-721,005.40

Finding the Fourth Proportional to 1,787,386.60, 2,679,330.30 and 721,005.40

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Solution

The fourth proportional to 1,787,386.60, 2,679,330.30 and 721,005.40 is: 1,080,802.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,787,386.60 : 2,679,330.30 = 721,005.40 : x
  2. Step 2: Convert to fraction form
    1,787,386.60/2,679,330.30 = 721,005.40/x
  3. Step 3: Cross multiply
    1,787,386.60x = 2,679,330.30 × 721,005.40
  4. Step 4: Simplify right side
    1,787,386.60x = 1,931,811,614,683.62
  5. Step 5: Solve for x
    x = 1,931,811,614,683.62/1,787,386.60
  6. Step 6: Final answer
    x = 1,080,802.34

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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.