Home / 811,095.70-1,119,319.32-448,543.95

Finding the Fourth Proportional to 811,095.70, 1,119,319.32 and 448,543.95

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Solution

The fourth proportional to 811,095.70, 1,119,319.32 and 448,543.95 is: 618,994.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    811,095.70 : 1,119,319.32 = 448,543.95 : x
  2. Step 2: Convert to fraction form
    811,095.70/1,119,319.32 = 448,543.95/x
  3. Step 3: Cross multiply
    811,095.70x = 1,119,319.32 × 448,543.95
  4. Step 4: Simplify right side
    811,095.70x = 502,063,909,104.11
  5. Step 5: Solve for x
    x = 502,063,909,104.11/811,095.70
  6. Step 6: Final answer
    x = 618,994.66

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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.