Home / 990,823.61-1,367,328.87-538,114.61

Finding the Fourth Proportional to 990,823.61, 1,367,328.87 and 538,114.61

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Solution

The fourth proportional to 990,823.61, 1,367,328.87 and 538,114.61 is: 742,593.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    990,823.61 : 1,367,328.87 = 538,114.61 : x
  2. Step 2: Convert to fraction form
    990,823.61/1,367,328.87 = 538,114.61/x
  3. Step 3: Cross multiply
    990,823.61x = 1,367,328.87 × 538,114.61
  4. Step 4: Simplify right side
    990,823.61x = 735,779,634,785.15
  5. Step 5: Solve for x
    x = 735,779,634,785.15/990,823.61
  6. Step 6: Final answer
    x = 742,593.97

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.