Home / 990,002.80-1,484,712.60-390,764.80

Finding the Fourth Proportional to 990,002.80, 1,484,712.60 and 390,764.80

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Solution

The fourth proportional to 990,002.80, 1,484,712.60 and 390,764.80 is: 586,032.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    990,002.80 : 1,484,712.60 = 390,764.80 : x
  2. Step 2: Convert to fraction form
    990,002.80/1,484,712.60 = 390,764.80/x
  3. Step 3: Cross multiply
    990,002.80x = 1,484,712.60 × 390,764.80
  4. Step 4: Simplify right side
    990,002.80x = 580,173,422,196.48
  5. Step 5: Solve for x
    x = 580,173,422,196.48/990,002.80
  6. Step 6: Final answer
    x = 586,032.10

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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.