Home / 778,729.52-1,074,646.70-421,033.52

Finding the Fourth Proportional to 778,729.52, 1,074,646.70 and 421,033.52

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Solution

The fourth proportional to 778,729.52, 1,074,646.70 and 421,033.52 is: 581,026.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    778,729.52 : 1,074,646.70 = 421,033.52 : x
  2. Step 2: Convert to fraction form
    778,729.52/1,074,646.70 = 421,033.52/x
  3. Step 3: Cross multiply
    778,729.52x = 1,074,646.70 × 421,033.52
  4. Step 4: Simplify right side
    778,729.52x = 452,462,282,857.38
  5. Step 5: Solve for x
    x = 452,462,282,857.38/778,729.52
  6. Step 6: Final answer
    x = 581,026.24

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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.