Home / 831,901.40-1,247,852.10-299,439.80

Finding the Fourth Proportional to 831,901.40, 1,247,852.10 and 299,439.80

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Solution

The fourth proportional to 831,901.40, 1,247,852.10 and 299,439.80 is: 449,159.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    831,901.40 : 1,247,852.10 = 299,439.80 : x
  2. Step 2: Convert to fraction form
    831,901.40/1,247,852.10 = 299,439.80/x
  3. Step 3: Cross multiply
    831,901.40x = 1,247,852.10 × 299,439.80
  4. Step 4: Simplify right side
    831,901.40x = 373,656,583,253.58
  5. Step 5: Solve for x
    x = 373,656,583,253.58/831,901.40
  6. Step 6: Final answer
    x = 449,159.70

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Half scale
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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.