Home / 439,716,761.71-658,570,248.87-209,847,271.57

Finding the Fourth Proportional to 439,716,761.71, 658,570,248.87 and 209,847,271.57

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Solution

The fourth proportional to 439,716,761.71, 658,570,248.87 and 209,847,271.57 is: 314,291,339.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    439,716,761.71 : 658,570,248.87 = 209,847,271.57 : x
  2. Step 2: Convert to fraction form
    439,716,761.71/658,570,248.87 = 209,847,271.57/x
  3. Step 3: Cross multiply
    439,716,761.71x = 658,570,248.87 × 209,847,271.57
  4. Step 4: Simplify right side
    439,716,761.71x = 138,199,169,862,545,376
  5. Step 5: Solve for x
    x = 138,199,169,862,545,376/439,716,761.71
  6. Step 6: Final answer
    x = 314,291,339.10

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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.