Home / 1,878,981.60-2,818,472.40-1,207,135.20

Finding the Fourth Proportional to 1,878,981.60, 2,818,472.40 and 1,207,135.20

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Solution

The fourth proportional to 1,878,981.60, 2,818,472.40 and 1,207,135.20 is: 1,810,702.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,878,981.60 : 2,818,472.40 = 1,207,135.20 : x
  2. Step 2: Convert to fraction form
    1,878,981.60/2,818,472.40 = 1,207,135.20/x
  3. Step 3: Cross multiply
    1,878,981.60x = 2,818,472.40 × 1,207,135.20
  4. Step 4: Simplify right side
    1,878,981.60x = 3,402,277,244,268.48
  5. Step 5: Solve for x
    x = 3,402,277,244,268.48/1,878,981.60
  6. Step 6: Final answer
    x = 1,810,702.80

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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.