Home / 12,478,718.40-18,718,077.60-5,760,254.40

Finding the Fourth Proportional to 12,478,718.40, 18,718,077.60 and 5,760,254.40

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Solution

The fourth proportional to 12,478,718.40, 18,718,077.60 and 5,760,254.40 is: 8,640,381.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,478,718.40 : 18,718,077.60 = 5,760,254.40 : x
  2. Step 2: Convert to fraction form
    12,478,718.40/18,718,077.60 = 5,760,254.40/x
  3. Step 3: Cross multiply
    12,478,718.40x = 18,718,077.60 × 5,760,254.40
  4. Step 4: Simplify right side
    12,478,718.40x = 107,820,888,854,941.45
  5. Step 5: Solve for x
    x = 107,820,888,854,941.45/12,478,718.40
  6. Step 6: Final answer
    x = 8,640,381.60

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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.