Home / 745,881.40-1,118,822.10-213,434.20

Finding the Fourth Proportional to 745,881.40, 1,118,822.10 and 213,434.20

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Solution

The fourth proportional to 745,881.40, 1,118,822.10 and 213,434.20 is: 320,151.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    745,881.40 : 1,118,822.10 = 213,434.20 : x
  2. Step 2: Convert to fraction form
    745,881.40/1,118,822.10 = 213,434.20/x
  3. Step 3: Cross multiply
    745,881.40x = 1,118,822.10 × 213,434.20
  4. Step 4: Simplify right side
    745,881.40x = 238,794,899,855.82
  5. Step 5: Solve for x
    x = 238,794,899,855.82/745,881.40
  6. Step 6: Final answer
    x = 320,151.30

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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.