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Finding the Fourth Proportional to 572,506.76, 790,028.47 and 317,841.55

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Solution

The fourth proportional to 572,506.76, 790,028.47 and 317,841.55 is: 438,604.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    572,506.76 : 790,028.47 = 317,841.55 : x
  2. Step 2: Convert to fraction form
    572,506.76/790,028.47 = 317,841.55/x
  3. Step 3: Cross multiply
    572,506.76x = 790,028.47 × 317,841.55
  4. Step 4: Simplify right side
    572,506.76x = 251,103,871,871.16
  5. Step 5: Solve for x
    x = 251,103,871,871.16/572,506.76
  6. Step 6: Final answer
    x = 438,604.20

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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.