Home / 1,215,136,938.52-1,676,897,025.78-658,219,980.52

Finding the Fourth Proportional to 1,215,136,938.52, 1,676,897,025.78 and 658,219,980.52

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Solution

The fourth proportional to 1,215,136,938.52, 1,676,897,025.78 and 658,219,980.52 is: 908,347,934.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,215,136,938.52 : 1,676,897,025.78 = 658,219,980.52 : x
  2. Step 2: Convert to fraction form
    1,215,136,938.52/1,676,897,025.78 = 658,219,980.52/x
  3. Step 3: Cross multiply
    1,215,136,938.52x = 1,676,897,025.78 × 658,219,980.52
  4. Step 4: Simplify right side
    1,215,136,938.52x = 1,103,767,127,642,957,440
  5. Step 5: Solve for x
    x = 1,103,767,127,642,957,440/1,215,136,938.52
  6. Step 6: Final answer
    x = 908,347,934.01

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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.