Home / 1,280,838.96-1,767,306.60-771,569.28

Finding the Fourth Proportional to 1,280,838.96, 1,767,306.60 and 771,569.28

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Solution

The fourth proportional to 1,280,838.96, 1,767,306.60 and 771,569.28 is: 1,064,614.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,280,838.96 : 1,767,306.60 = 771,569.28 : x
  2. Step 2: Convert to fraction form
    1,280,838.96/1,767,306.60 = 771,569.28/x
  3. Step 3: Cross multiply
    1,280,838.96x = 1,767,306.60 × 771,569.28
  4. Step 4: Simplify right side
    1,280,838.96x = 1,363,599,480,901.25
  5. Step 5: Solve for x
    x = 1,363,599,480,901.25/1,280,838.96
  6. Step 6: Final answer
    x = 1,064,614.31

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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.