Home / 1,005,085.35-1,387,341.02-643,483.13

Finding the Fourth Proportional to 1,005,085.35, 1,387,341.02 and 643,483.13

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Solution

The fourth proportional to 1,005,085.35, 1,387,341.02 and 643,483.13 is: 888,213.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,005,085.35 : 1,387,341.02 = 643,483.13 : x
  2. Step 2: Convert to fraction form
    1,005,085.35/1,387,341.02 = 643,483.13/x
  3. Step 3: Cross multiply
    1,005,085.35x = 1,387,341.02 × 643,483.13
  4. Step 4: Simplify right side
    1,005,085.35x = 892,730,531,772.87
  5. Step 5: Solve for x
    x = 892,730,531,772.87/1,005,085.35
  6. Step 6: Final answer
    x = 888,213.65

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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.