Home / 917,551.32-1,376,326.98-286,519.20

Finding the Fourth Proportional to 917,551.32, 1,376,326.98 and 286,519.20

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Solution

The fourth proportional to 917,551.32, 1,376,326.98 and 286,519.20 is: 429,778.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    917,551.32 : 1,376,326.98 = 286,519.20 : x
  2. Step 2: Convert to fraction form
    917,551.32/1,376,326.98 = 286,519.20/x
  3. Step 3: Cross multiply
    917,551.32x = 1,376,326.98 × 286,519.20
  4. Step 4: Simplify right side
    917,551.32x = 394,344,105,248.02
  5. Step 5: Solve for x
    x = 394,344,105,248.02/917,551.32
  6. Step 6: Final answer
    x = 429,778.80

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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.