Home / 917,963.40-1,376,944.85-286,877.21

Finding the Fourth Proportional to 917,963.40, 1,376,944.85 and 286,877.21

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Solution

The fourth proportional to 917,963.40, 1,376,944.85 and 286,877.21 is: 430,315.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    917,963.40 : 1,376,944.85 = 286,877.21 : x
  2. Step 2: Convert to fraction form
    917,963.40/1,376,944.85 = 286,877.21/x
  3. Step 3: Cross multiply
    917,963.40x = 1,376,944.85 × 286,877.21
  4. Step 4: Simplify right side
    917,963.40x = 395,014,088,572.76
  5. Step 5: Solve for x
    x = 395,014,088,572.76/917,963.40
  6. Step 6: Final answer
    x = 430,315.73

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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.