Home / 805,619.80-1,208,429.70-490,691.80

Finding the Fourth Proportional to 805,619.80, 1,208,429.70 and 490,691.80

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Solution

The fourth proportional to 805,619.80, 1,208,429.70 and 490,691.80 is: 736,037.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    805,619.80 : 1,208,429.70 = 490,691.80 : x
  2. Step 2: Convert to fraction form
    805,619.80/1,208,429.70 = 490,691.80/x
  3. Step 3: Cross multiply
    805,619.80x = 1,208,429.70 × 490,691.80
  4. Step 4: Simplify right side
    805,619.80x = 592,966,544,666.46
  5. Step 5: Solve for x
    x = 592,966,544,666.46/805,619.80
  6. Step 6: Final answer
    x = 736,037.70

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1.5x scale

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.