Home / 1,407,423.60-2,111,135.40-342,457.20

Finding the Fourth Proportional to 1,407,423.60, 2,111,135.40 and 342,457.20

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Solution

The fourth proportional to 1,407,423.60, 2,111,135.40 and 342,457.20 is: 513,685.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,407,423.60 : 2,111,135.40 = 342,457.20 : x
  2. Step 2: Convert to fraction form
    1,407,423.60/2,111,135.40 = 342,457.20/x
  3. Step 3: Cross multiply
    1,407,423.60x = 2,111,135.40 × 342,457.20
  4. Step 4: Simplify right side
    1,407,423.60x = 722,973,517,904.88
  5. Step 5: Solve for x
    x = 722,973,517,904.88/1,407,423.60
  6. Step 6: Final answer
    x = 513,685.80

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Double scale
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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.