Home / 643,445.29-887,585.58-401,307.48

Finding the Fourth Proportional to 643,445.29, 887,585.58 and 401,307.48

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Solution

The fourth proportional to 643,445.29, 887,585.58 and 401,307.48 is: 553,574.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    643,445.29 : 887,585.58 = 401,307.48 : x
  2. Step 2: Convert to fraction form
    643,445.29/887,585.58 = 401,307.48/x
  3. Step 3: Cross multiply
    643,445.29x = 887,585.58 × 401,307.48
  4. Step 4: Simplify right side
    643,445.29x = 356,194,732,394.14
  5. Step 5: Solve for x
    x = 356,194,732,394.14/643,445.29
  6. Step 6: Final answer
    x = 553,574.23

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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.