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Finding the Fourth Proportional to 1,210,059,414.72, 1,670,654,364.30 and 987,572,624.22

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Solution

The fourth proportional to 1,210,059,414.72, 1,670,654,364.30 and 987,572,624.22 is: 1,363,480,581.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,210,059,414.72 : 1,670,654,364.30 = 987,572,624.22 : x
  2. Step 2: Convert to fraction form
    1,210,059,414.72/1,670,654,364.30 = 987,572,624.22/x
  3. Step 3: Cross multiply
    1,210,059,414.72x = 1,670,654,364.30 × 987,572,624.22
  4. Step 4: Simplify right side
    1,210,059,414.72x = 1,649,892,514,716,346,880
  5. Step 5: Solve for x
    x = 1,649,892,514,716,346,880/1,210,059,414.72
  6. Step 6: Final answer
    x = 1,363,480,581.74

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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.