Home / 917,954.32-1,377,470.40-385,434.40

Finding the Fourth Proportional to 917,954.32, 1,377,470.40 and 385,434.40

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Solution

The fourth proportional to 917,954.32, 1,377,470.40 and 385,434.40 is: 578,377.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    917,954.32 : 1,377,470.40 = 385,434.40 : x
  2. Step 2: Convert to fraction form
    917,954.32/1,377,470.40 = 385,434.40/x
  3. Step 3: Cross multiply
    917,954.32x = 1,377,470.40 × 385,434.40
  4. Step 4: Simplify right side
    917,954.32x = 530,924,477,141.76
  5. Step 5: Solve for x
    x = 530,924,477,141.76/917,954.32
  6. Step 6: Final answer
    x = 578,377.88

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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.