Home / 990,368.10-1,483,802.55-811,908.90

Finding the Fourth Proportional to 990,368.10, 1,483,802.55 and 811,908.90

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Solution

The fourth proportional to 990,368.10, 1,483,802.55 and 811,908.90 is: 1,216,429.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    990,368.10 : 1,483,802.55 = 811,908.90 : x
  2. Step 2: Convert to fraction form
    990,368.10/1,483,802.55 = 811,908.90/x
  3. Step 3: Cross multiply
    990,368.10x = 1,483,802.55 × 811,908.90
  4. Step 4: Simplify right side
    990,368.10x = 1,204,712,496,187.70
  5. Step 5: Solve for x
    x = 1,204,712,496,187.70/990,368.10
  6. Step 6: Final answer
    x = 1,216,429.02

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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.