Home / 745,877.40-1,118,816.10-213,430.20

Finding the Fourth Proportional to 745,877.40, 1,118,816.10 and 213,430.20

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Solution

The fourth proportional to 745,877.40, 1,118,816.10 and 213,430.20 is: 320,145.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    745,877.40 : 1,118,816.10 = 213,430.20 : x
  2. Step 2: Convert to fraction form
    745,877.40/1,118,816.10 = 213,430.20/x
  3. Step 3: Cross multiply
    745,877.40x = 1,118,816.10 × 213,430.20
  4. Step 4: Simplify right side
    745,877.40x = 238,789,143,986.22
  5. Step 5: Solve for x
    x = 238,789,143,986.22/745,877.40
  6. Step 6: Final answer
    x = 320,145.30

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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.