Home / 917,360.40-1,376,040.60-385,263.30

Finding the Fourth Proportional to 917,360.40, 1,376,040.60 and 385,263.30

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Solution

The fourth proportional to 917,360.40, 1,376,040.60 and 385,263.30 is: 577,894.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    917,360.40 : 1,376,040.60 = 385,263.30 : x
  2. Step 2: Convert to fraction form
    917,360.40/1,376,040.60 = 385,263.30/x
  3. Step 3: Cross multiply
    917,360.40x = 1,376,040.60 × 385,263.30
  4. Step 4: Simplify right side
    917,360.40x = 530,137,942,489.98
  5. Step 5: Solve for x
    x = 530,137,942,489.98/917,360.40
  6. Step 6: Final answer
    x = 577,894.95

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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.