Home / 875,220.30-1,312,830.45-342,564.30

Finding the Fourth Proportional to 875,220.30, 1,312,830.45 and 342,564.30

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Solution

The fourth proportional to 875,220.30, 1,312,830.45 and 342,564.30 is: 513,846.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    875,220.30 : 1,312,830.45 = 342,564.30 : x
  2. Step 2: Convert to fraction form
    875,220.30/1,312,830.45 = 342,564.30/x
  3. Step 3: Cross multiply
    875,220.30x = 1,312,830.45 × 342,564.30
  4. Step 4: Simplify right side
    875,220.30x = 449,728,844,122.94
  5. Step 5: Solve for x
    x = 449,728,844,122.94/875,220.30
  6. Step 6: Final answer
    x = 513,846.45

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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.