Home / 521,857,781,172.40-782,899,341,809.64-158,851,832,406.64

Finding the Fourth Proportional to 521,857,781,172.40, 782,899,341,809.64 and 158,851,832,406.64

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Solution

The fourth proportional to 521,857,781,172.40, 782,899,341,809.64 and 158,851,832,406.64 is: 238,312,045,011.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,857,781,172.40 : 782,899,341,809.64 = 158,851,832,406.64 : x
  2. Step 2: Convert to fraction form
    521,857,781,172.40/782,899,341,809.64 = 158,851,832,406.64/x
  3. Step 3: Cross multiply
    521,857,781,172.40x = 782,899,341,809.64 × 158,851,832,406.64
  4. Step 4: Simplify right side
    521,857,781,172.40x = 124,364,995,036,413,719,216,128
  5. Step 5: Solve for x
    x = 124,364,995,036,413,719,216,128/521,857,781,172.40
  6. Step 6: Final answer
    x = 238,312,045,011.61

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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.