Home / 918,066.76-1,377,100.38-286,986.28

Finding the Fourth Proportional to 918,066.76, 1,377,100.38 and 286,986.28

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Solution

The fourth proportional to 918,066.76, 1,377,100.38 and 286,986.28 is: 430,479.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    918,066.76 : 1,377,100.38 = 286,986.28 : x
  2. Step 2: Convert to fraction form
    918,066.76/1,377,100.38 = 286,986.28/x
  3. Step 3: Cross multiply
    918,066.76x = 1,377,100.38 × 286,986.28
  4. Step 4: Simplify right side
    918,066.76x = 395,208,915,242.79
  5. Step 5: Solve for x
    x = 395,208,915,242.79/918,066.76
  6. Step 6: Final answer
    x = 430,479.50

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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.