Home / 12,688,314.40-19,032,471.60-4,168,928.80

Finding the Fourth Proportional to 12,688,314.40, 19,032,471.60 and 4,168,928.80

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Solution

The fourth proportional to 12,688,314.40, 19,032,471.60 and 4,168,928.80 is: 6,253,393.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,688,314.40 : 19,032,471.60 = 4,168,928.80 : x
  2. Step 2: Convert to fraction form
    12,688,314.40/19,032,471.60 = 4,168,928.80/x
  3. Step 3: Cross multiply
    12,688,314.40x = 19,032,471.60 × 4,168,928.80
  4. Step 4: Simplify right side
    12,688,314.40x = 79,345,018,988,422.08
  5. Step 5: Solve for x
    x = 79,345,018,988,422.08/12,688,314.40
  6. Step 6: Final answer
    x = 6,253,393.20

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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.