Home / 1,238,784,386.40-1,858,176,579.60-715,049,280.90

Finding the Fourth Proportional to 1,238,784,386.40, 1,858,176,579.60 and 715,049,280.90

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Solution

The fourth proportional to 1,238,784,386.40, 1,858,176,579.60 and 715,049,280.90 is: 1,072,573,921.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,238,784,386.40 : 1,858,176,579.60 = 715,049,280.90 : x
  2. Step 2: Convert to fraction form
    1,238,784,386.40/1,858,176,579.60 = 715,049,280.90/x
  3. Step 3: Cross multiply
    1,238,784,386.40x = 1,858,176,579.60 × 715,049,280.90
  4. Step 4: Simplify right side
    1,238,784,386.40x = 1,328,687,827,028,201,472
  5. Step 5: Solve for x
    x = 1,328,687,827,028,201,472/1,238,784,386.40
  6. Step 6: Final answer
    x = 1,072,573,921.35

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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.