Home / 917,343.90-1,376,015.85-286,175.70

Finding the Fourth Proportional to 917,343.90, 1,376,015.85 and 286,175.70

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Solution

The fourth proportional to 917,343.90, 1,376,015.85 and 286,175.70 is: 429,263.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    917,343.90 : 1,376,015.85 = 286,175.70 : x
  2. Step 2: Convert to fraction form
    917,343.90/1,376,015.85 = 286,175.70/x
  3. Step 3: Cross multiply
    917,343.90x = 1,376,015.85 × 286,175.70
  4. Step 4: Simplify right side
    917,343.90x = 393,782,299,084.85
  5. Step 5: Solve for x
    x = 393,782,299,084.85/917,343.90
  6. Step 6: Final answer
    x = 429,263.55

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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.