Home / 1,407,421.60-2,111,132.40-342,455.20

Finding the Fourth Proportional to 1,407,421.60, 2,111,132.40 and 342,455.20

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Solution

The fourth proportional to 1,407,421.60, 2,111,132.40 and 342,455.20 is: 513,682.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,407,421.60 : 2,111,132.40 = 342,455.20 : x
  2. Step 2: Convert to fraction form
    1,407,421.60/2,111,132.40 = 342,455.20/x
  3. Step 3: Cross multiply
    1,407,421.60x = 2,111,132.40 × 342,455.20
  4. Step 4: Simplify right side
    1,407,421.60x = 722,968,268,268.48
  5. Step 5: Solve for x
    x = 722,968,268,268.48/1,407,421.60
  6. Step 6: Final answer
    x = 513,682.80

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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.