Home / 256,406,519.70-384,609,779.55-74,659,626.90

Finding the Fourth Proportional to 256,406,519.70, 384,609,779.55 and 74,659,626.90

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Solution

The fourth proportional to 256,406,519.70, 384,609,779.55 and 74,659,626.90 is: 111,989,440.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,406,519.70 : 384,609,779.55 = 74,659,626.90 : x
  2. Step 2: Convert to fraction form
    256,406,519.70/384,609,779.55 = 74,659,626.90/x
  3. Step 3: Cross multiply
    256,406,519.70x = 384,609,779.55 × 74,659,626.90
  4. Step 4: Simplify right side
    256,406,519.70x = 28,714,822,643,294,252
  5. Step 5: Solve for x
    x = 28,714,822,643,294,252/256,406,519.70
  6. Step 6: Final answer
    x = 111,989,440.35

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1.5x scale

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.