Home / 579,426.70-869,140.05-486,114.70

Finding the Fourth Proportional to 579,426.70, 869,140.05 and 486,114.70

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Solution

The fourth proportional to 579,426.70, 869,140.05 and 486,114.70 is: 729,172.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    579,426.70 : 869,140.05 = 486,114.70 : x
  2. Step 2: Convert to fraction form
    579,426.70/869,140.05 = 486,114.70/x
  3. Step 3: Cross multiply
    579,426.70x = 869,140.05 × 486,114.70
  4. Step 4: Simplify right side
    579,426.70x = 422,501,754,663.74
  5. Step 5: Solve for x
    x = 422,501,754,663.74/579,426.70
  6. Step 6: Final answer
    x = 729,172.05

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Double scale
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Similar ratio
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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.