Home / 728,642.31-1,005,527.34-401,947.95

Finding the Fourth Proportional to 728,642.31, 1,005,527.34 and 401,947.95

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Solution

The fourth proportional to 728,642.31, 1,005,527.34 and 401,947.95 is: 554,688.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    728,642.31 : 1,005,527.34 = 401,947.95 : x
  2. Step 2: Convert to fraction form
    728,642.31/1,005,527.34 = 401,947.95/x
  3. Step 3: Cross multiply
    728,642.31x = 1,005,527.34 × 401,947.95
  4. Step 4: Simplify right side
    728,642.31x = 404,169,652,981.95
  5. Step 5: Solve for x
    x = 404,169,652,981.95/728,642.31
  6. Step 6: Final answer
    x = 554,688.70

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1.5x scale

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.