Home / 1,478,448,001.40-2,217,527,878.80-387,931,069.40

Finding the Fourth Proportional to 1,478,448,001.40, 2,217,527,878.80 and 387,931,069.40

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Solution

The fourth proportional to 1,478,448,001.40, 2,217,527,878.80 and 387,931,069.40 is: 581,858,787.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,478,448,001.40 : 2,217,527,878.80 = 387,931,069.40 : x
  2. Step 2: Convert to fraction form
    1,478,448,001.40/2,217,527,878.80 = 387,931,069.40/x
  3. Step 3: Cross multiply
    1,478,448,001.40x = 2,217,527,878.80 × 387,931,069.40
  4. Step 4: Simplify right side
    1,478,448,001.40x = 860,247,961,447,197,568
  5. Step 5: Solve for x
    x = 860,247,961,447,197,568/1,478,448,001.40
  6. Step 6: Final answer
    x = 581,858,787.48

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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.