Home / 917,963.90-1,376,945.60-286,877.70

Finding the Fourth Proportional to 917,963.90, 1,376,945.60 and 286,877.70

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Solution

The fourth proportional to 917,963.90, 1,376,945.60 and 286,877.70 is: 430,316.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    917,963.90 : 1,376,945.60 = 286,877.70 : x
  2. Step 2: Convert to fraction form
    917,963.90/1,376,945.60 = 286,877.70/x
  3. Step 3: Cross multiply
    917,963.90x = 1,376,945.60 × 286,877.70
  4. Step 4: Simplify right side
    917,963.90x = 395,014,986,753.12
  5. Step 5: Solve for x
    x = 395,014,986,753.12/917,963.90
  6. Step 6: Final answer
    x = 430,316.47

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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.