Home / 1,248,003.40-1,872,005.10-406,640.20

Finding the Fourth Proportional to 1,248,003.40, 1,872,005.10 and 406,640.20

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Solution

The fourth proportional to 1,248,003.40, 1,872,005.10 and 406,640.20 is: 609,960.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,248,003.40 : 1,872,005.10 = 406,640.20 : x
  2. Step 2: Convert to fraction form
    1,248,003.40/1,872,005.10 = 406,640.20/x
  3. Step 3: Cross multiply
    1,248,003.40x = 1,872,005.10 × 406,640.20
  4. Step 4: Simplify right side
    1,248,003.40x = 761,232,528,265.02
  5. Step 5: Solve for x
    x = 761,232,528,265.02/1,248,003.40
  6. Step 6: Final answer
    x = 609,960.30

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Half scale
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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.