Home / 649,642,499.10-974,702,897.10-212,957,429.40

Finding the Fourth Proportional to 649,642,499.10, 974,702,897.10 and 212,957,429.40

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Solution

The fourth proportional to 649,642,499.10, 974,702,897.10 and 212,957,429.40 is: 319,514,538.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    649,642,499.10 : 974,702,897.10 = 212,957,429.40 : x
  2. Step 2: Convert to fraction form
    649,642,499.10/974,702,897.10 = 212,957,429.40/x
  3. Step 3: Cross multiply
    649,642,499.10x = 974,702,897.10 × 212,957,429.40
  4. Step 4: Simplify right side
    649,642,499.10x = 207,570,223,395,148,736
  5. Step 5: Solve for x
    x = 207,570,223,395,148,736/649,642,499.10
  6. Step 6: Final answer
    x = 319,514,538.66

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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.