Home / 857,911,643.72-1,287,363,949.76-359,877,556.10

Finding the Fourth Proportional to 857,911,643.72, 1,287,363,949.76 and 359,877,556.10

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Solution

The fourth proportional to 857,911,643.72, 1,287,363,949.76 and 359,877,556.10 is: 540,024,599.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    857,911,643.72 : 1,287,363,949.76 = 359,877,556.10 : x
  2. Step 2: Convert to fraction form
    857,911,643.72/1,287,363,949.76 = 359,877,556.10/x
  3. Step 3: Cross multiply
    857,911,643.72x = 1,287,363,949.76 × 359,877,556.10
  4. Step 4: Simplify right side
    857,911,643.72x = 463,293,392,050,872,000
  5. Step 5: Solve for x
    x = 463,293,392,050,872,000/857,911,643.72
  6. Step 6: Final answer
    x = 540,024,599.79

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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.