Home / 1,478,448,126.40-2,217,528,066.30-387,931,194.40

Finding the Fourth Proportional to 1,478,448,126.40, 2,217,528,066.30 and 387,931,194.40

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Solution

The fourth proportional to 1,478,448,126.40, 2,217,528,066.30 and 387,931,194.40 is: 581,858,974.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,478,448,126.40 : 2,217,528,066.30 = 387,931,194.40 : x
  2. Step 2: Convert to fraction form
    1,478,448,126.40/2,217,528,066.30 = 387,931,194.40/x
  3. Step 3: Cross multiply
    1,478,448,126.40x = 2,217,528,066.30 × 387,931,194.40
  4. Step 4: Simplify right side
    1,478,448,126.40x = 860,248,311,375,281,408
  5. Step 5: Solve for x
    x = 860,248,311,375,281,408/1,478,448,126.40
  6. Step 6: Final answer
    x = 581,858,974.97

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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.