Home / 1,025,407.08-1,538,114.40-315,430.20

Finding the Fourth Proportional to 1,025,407.08, 1,538,114.40 and 315,430.20

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Solution

The fourth proportional to 1,025,407.08, 1,538,114.40 and 315,430.20 is: 473,146.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,025,407.08 : 1,538,114.40 = 315,430.20 : x
  2. Step 2: Convert to fraction form
    1,025,407.08/1,538,114.40 = 315,430.20/x
  3. Step 3: Cross multiply
    1,025,407.08x = 1,538,114.40 × 315,430.20
  4. Step 4: Simplify right side
    1,025,407.08x = 485,167,732,814.88
  5. Step 5: Solve for x
    x = 485,167,732,814.88/1,025,407.08
  6. Step 6: Final answer
    x = 473,146.46

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Double scale
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Similar ratio
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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.