Home / 917,801.10-1,376,701.65-781,988.40

Finding the Fourth Proportional to 917,801.10, 1,376,701.65 and 781,988.40

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Solution

The fourth proportional to 917,801.10, 1,376,701.65 and 781,988.40 is: 1,172,982.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    917,801.10 : 1,376,701.65 = 781,988.40 : x
  2. Step 2: Convert to fraction form
    917,801.10/1,376,701.65 = 781,988.40/x
  3. Step 3: Cross multiply
    917,801.10x = 1,376,701.65 × 781,988.40
  4. Step 4: Simplify right side
    917,801.10x = 1,076,564,720,560.86
  5. Step 5: Solve for x
    x = 1,076,564,720,560.86/917,801.10
  6. Step 6: Final answer
    x = 1,172,982.60

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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.