Home / 917,705.10-1,376,557.65-781,892.40

Finding the Fourth Proportional to 917,705.10, 1,376,557.65 and 781,892.40

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Solution

The fourth proportional to 917,705.10, 1,376,557.65 and 781,892.40 is: 1,172,838.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    917,705.10 : 1,376,557.65 = 781,892.40 : x
  2. Step 2: Convert to fraction form
    917,705.10/1,376,557.65 = 781,892.40/x
  3. Step 3: Cross multiply
    917,705.10x = 1,376,557.65 × 781,892.40
  4. Step 4: Simplify right side
    917,705.10x = 1,076,319,964,696.86
  5. Step 5: Solve for x
    x = 1,076,319,964,696.86/917,705.10
  6. Step 6: Final answer
    x = 1,172,838.60

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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.