Home / 905,381.69-1,249,426.44-497,509.80

Finding the Fourth Proportional to 905,381.69, 1,249,426.44 and 497,509.80

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Solution

The fourth proportional to 905,381.69, 1,249,426.44 and 497,509.80 is: 686,563.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    905,381.69 : 1,249,426.44 = 497,509.80 : x
  2. Step 2: Convert to fraction form
    905,381.69/1,249,426.44 = 497,509.80/x
  3. Step 3: Cross multiply
    905,381.69x = 1,249,426.44 × 497,509.80
  4. Step 4: Simplify right side
    905,381.69x = 621,601,898,279.11
  5. Step 5: Solve for x
    x = 621,601,898,279.11/905,381.69
  6. Step 6: Final answer
    x = 686,563.37

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Double scale
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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.