Home / 918,133.65-1,377,200.48-287,046.45

Finding the Fourth Proportional to 918,133.65, 1,377,200.48 and 287,046.45

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Solution

The fourth proportional to 918,133.65, 1,377,200.48 and 287,046.45 is: 430,569.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    918,133.65 : 1,377,200.48 = 287,046.45 : x
  2. Step 2: Convert to fraction form
    918,133.65/1,377,200.48 = 287,046.45/x
  3. Step 3: Cross multiply
    918,133.65x = 1,377,200.48 × 287,046.45
  4. Step 4: Simplify right side
    918,133.65x = 395,320,507,287.06
  5. Step 5: Solve for x
    x = 395,320,507,287.06/918,133.65
  6. Step 6: Final answer
    x = 430,569.68

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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.