Home / 1,240,409.26-1,860,878.90-430,818.72

Finding the Fourth Proportional to 1,240,409.26, 1,860,878.90 and 430,818.72

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Solution

The fourth proportional to 1,240,409.26, 1,860,878.90 and 430,818.72 is: 646,320.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,240,409.26 : 1,860,878.90 = 430,818.72 : x
  2. Step 2: Convert to fraction form
    1,240,409.26/1,860,878.90 = 430,818.72/x
  3. Step 3: Cross multiply
    1,240,409.26x = 1,860,878.90 × 430,818.72
  4. Step 4: Simplify right side
    1,240,409.26x = 801,701,465,773.01
  5. Step 5: Solve for x
    x = 801,701,465,773.01/1,240,409.26
  6. Step 6: Final answer
    x = 646,320.12

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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.