Home / 788,385,876.92-1,087,979,556.16-435,985,575.92

Finding the Fourth Proportional to 788,385,876.92, 1,087,979,556.16 and 435,985,575.92

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Solution

The fourth proportional to 788,385,876.92, 1,087,979,556.16 and 435,985,575.92 is: 601,663,991.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    788,385,876.92 : 1,087,979,556.16 = 435,985,575.92 : x
  2. Step 2: Convert to fraction form
    788,385,876.92/1,087,979,556.16 = 435,985,575.92/x
  3. Step 3: Cross multiply
    788,385,876.92x = 1,087,979,556.16 × 435,985,575.92
  4. Step 4: Simplify right side
    788,385,876.92x = 474,343,393,381,603,648
  5. Step 5: Solve for x
    x = 474,343,393,381,603,648/788,385,876.92
  6. Step 6: Final answer
    x = 601,663,991.29

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.