Home / 1,605,135.30-2,407,699.71-390,702.30

Finding the Fourth Proportional to 1,605,135.30, 2,407,699.71 and 390,702.30

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Solution

The fourth proportional to 1,605,135.30, 2,407,699.71 and 390,702.30 is: 586,052.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,605,135.30 : 2,407,699.71 = 390,702.30 : x
  2. Step 2: Convert to fraction form
    1,605,135.30/2,407,699.71 = 390,702.30/x
  3. Step 3: Cross multiply
    1,605,135.30x = 2,407,699.71 × 390,702.30
  4. Step 4: Simplify right side
    1,605,135.30x = 940,693,814,406.33
  5. Step 5: Solve for x
    x = 940,693,814,406.33/1,605,135.30
  6. Step 6: Final answer
    x = 586,052.66

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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.