Home / 1,287,380,211.90-1,931,358,176.55-469,492,512.90

Finding the Fourth Proportional to 1,287,380,211.90, 1,931,358,176.55 and 469,492,512.90

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Solution

The fourth proportional to 1,287,380,211.90, 1,931,358,176.55 and 469,492,512.90 is: 704,343,748.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,287,380,211.90 : 1,931,358,176.55 = 469,492,512.90 : x
  2. Step 2: Convert to fraction form
    1,287,380,211.90/1,931,358,176.55 = 469,492,512.90/x
  3. Step 3: Cross multiply
    1,287,380,211.90x = 1,931,358,176.55 × 469,492,512.90
  4. Step 4: Simplify right side
    1,287,380,211.90x = 906,758,203,618,421,248
  5. Step 5: Solve for x
    x = 906,758,203,618,421,248/1,287,380,211.90
  6. Step 6: Final answer
    x = 704,343,748.05

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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.