Home / 1,111,398.49-1,666,904.55-312,490.43

Finding the Fourth Proportional to 1,111,398.49, 1,666,904.55 and 312,490.43

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Solution

The fourth proportional to 1,111,398.49, 1,666,904.55 and 312,490.43 is: 468,681.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,111,398.49 : 1,666,904.55 = 312,490.43 : x
  2. Step 2: Convert to fraction form
    1,111,398.49/1,666,904.55 = 312,490.43/x
  3. Step 3: Cross multiply
    1,111,398.49x = 1,666,904.55 × 312,490.43
  4. Step 4: Simplify right side
    1,111,398.49x = 520,891,719,598.46
  5. Step 5: Solve for x
    x = 520,891,719,598.46/1,111,398.49
  6. Step 6: Final answer
    x = 468,681.33

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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.