Home / 917,955.32-1,377,471.90-385,435.40

Finding the Fourth Proportional to 917,955.32, 1,377,471.90 and 385,435.40

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Solution

The fourth proportional to 917,955.32, 1,377,471.90 and 385,435.40 is: 578,379.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    917,955.32 : 1,377,471.90 = 385,435.40 : x
  2. Step 2: Convert to fraction form
    917,955.32/1,377,471.90 = 385,435.40/x
  3. Step 3: Cross multiply
    917,955.32x = 1,377,471.90 × 385,435.40
  4. Step 4: Simplify right side
    917,955.32x = 530,926,432,765.26
  5. Step 5: Solve for x
    x = 530,926,432,765.26/917,955.32
  6. Step 6: Final answer
    x = 578,379.38

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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.