Home / 1,387,017.64-1,913,543.68-870,470.11

Finding the Fourth Proportional to 1,387,017.64, 1,913,543.68 and 870,470.11

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Solution

The fourth proportional to 1,387,017.64, 1,913,543.68 and 870,470.11 is: 1,200,909.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,387,017.64 : 1,913,543.68 = 870,470.11 : x
  2. Step 2: Convert to fraction form
    1,387,017.64/1,913,543.68 = 870,470.11/x
  3. Step 3: Cross multiply
    1,387,017.64x = 1,913,543.68 × 870,470.11
  4. Step 4: Simplify right side
    1,387,017.64x = 1,665,682,563,699.34
  5. Step 5: Solve for x
    x = 1,665,682,563,699.34/1,387,017.64
  6. Step 6: Final answer
    x = 1,200,909.43

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.