Home / 1,320,145,484,731.90-1,980,215,753,630-413,652,688,422.42

Finding the Fourth Proportional to 1,320,145,484,731.90, 1,980,215,753,630 and 413,652,688,422.42

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Solution

The fourth proportional to 1,320,145,484,731.90, 1,980,215,753,630 and 413,652,688,422.42 is: 620,478,257,600.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,320,145,484,731.90 : 1,980,215,753,630 = 413,652,688,422.42 : x
  2. Step 2: Convert to fraction form
    1,320,145,484,731.90/1,980,215,753,630 = 413,652,688,422.42/x
  3. Step 3: Cross multiply
    1,320,145,484,731.90x = 1,980,215,753,630 × 413,652,688,422.42
  4. Step 4: Simplify right side
    1,320,145,484,731.90x = 819,121,570,145,478,023,053,312
  5. Step 5: Solve for x
    x = 819,121,570,145,478,023,053,312/1,320,145,484,731.90
  6. Step 6: Final answer
    x = 620,478,257,600.40

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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.