Home / 1,147,688.40-1,584,114.12-808,309.20

Finding the Fourth Proportional to 1,147,688.40, 1,584,114.12 and 808,309.20

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Solution

The fourth proportional to 1,147,688.40, 1,584,114.12 and 808,309.20 is: 1,115,680.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,147,688.40 : 1,584,114.12 = 808,309.20 : x
  2. Step 2: Convert to fraction form
    1,147,688.40/1,584,114.12 = 808,309.20/x
  3. Step 3: Cross multiply
    1,147,688.40x = 1,584,114.12 × 808,309.20
  4. Step 4: Simplify right side
    1,147,688.40x = 1,280,454,017,045.90
  5. Step 5: Solve for x
    x = 1,280,454,017,045.90/1,147,688.40
  6. Step 6: Final answer
    x = 1,115,680.89

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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.