Home / 1,280,943.60-1,921,415.40-808,551.60

Finding the Fourth Proportional to 1,280,943.60, 1,921,415.40 and 808,551.60

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Solution

The fourth proportional to 1,280,943.60, 1,921,415.40 and 808,551.60 is: 1,212,827.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,280,943.60 : 1,921,415.40 = 808,551.60 : x
  2. Step 2: Convert to fraction form
    1,280,943.60/1,921,415.40 = 808,551.60/x
  3. Step 3: Cross multiply
    1,280,943.60x = 1,921,415.40 × 808,551.60
  4. Step 4: Simplify right side
    1,280,943.60x = 1,553,563,495,934.64
  5. Step 5: Solve for x
    x = 1,553,563,495,934.64/1,280,943.60
  6. Step 6: Final answer
    x = 1,212,827.40

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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.