Home / 1,287,226,803.40-1,930,840,205.10-317,878,419.40

Finding the Fourth Proportional to 1,287,226,803.40, 1,930,840,205.10 and 317,878,419.40

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Solution

The fourth proportional to 1,287,226,803.40, 1,930,840,205.10 and 317,878,419.40 is: 476,817,629.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,287,226,803.40 : 1,930,840,205.10 = 317,878,419.40 : x
  2. Step 2: Convert to fraction form
    1,287,226,803.40/1,930,840,205.10 = 317,878,419.40/x
  3. Step 3: Cross multiply
    1,287,226,803.40x = 1,930,840,205.10 × 317,878,419.40
  4. Step 4: Simplify right side
    1,287,226,803.40x = 613,772,432,511,159,680
  5. Step 5: Solve for x
    x = 613,772,432,511,159,680/1,287,226,803.40
  6. Step 6: Final answer
    x = 476,817,629.10

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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.