Home / 579,435.10-870,136.80-429,844.30

Finding the Fourth Proportional to 579,435.10, 870,136.80 and 429,844.30

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Solution

The fourth proportional to 579,435.10, 870,136.80 and 429,844.30 is: 645,496.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    579,435.10 : 870,136.80 = 429,844.30 : x
  2. Step 2: Convert to fraction form
    579,435.10/870,136.80 = 429,844.30/x
  3. Step 3: Cross multiply
    579,435.10x = 870,136.80 × 429,844.30
  4. Step 4: Simplify right side
    579,435.10x = 374,023,343,700.24
  5. Step 5: Solve for x
    x = 374,023,343,700.24/579,435.10
  6. Step 6: Final answer
    x = 645,496.53

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Double scale
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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.