Home / 858,512,264.40-1,287,768,396.60-212,280,008.40

Finding the Fourth Proportional to 858,512,264.40, 1,287,768,396.60 and 212,280,008.40

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Solution

The fourth proportional to 858,512,264.40, 1,287,768,396.60 and 212,280,008.40 is: 318,420,012.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    858,512,264.40 : 1,287,768,396.60 = 212,280,008.40 : x
  2. Step 2: Convert to fraction form
    858,512,264.40/1,287,768,396.60 = 212,280,008.40/x
  3. Step 3: Cross multiply
    858,512,264.40x = 1,287,768,396.60 × 212,280,008.40
  4. Step 4: Simplify right side
    858,512,264.40x = 273,367,486,047,502,528
  5. Step 5: Solve for x
    x = 273,367,486,047,502,528/858,512,264.40
  6. Step 6: Final answer
    x = 318,420,012.60

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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.