Home / 572,320.47-790,014.33-491,423.07

Finding the Fourth Proportional to 572,320.47, 790,014.33 and 491,423.07

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Solution

The fourth proportional to 572,320.47, 790,014.33 and 491,423.07 is: 678,345.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    572,320.47 : 790,014.33 = 491,423.07 : x
  2. Step 2: Convert to fraction form
    572,320.47/790,014.33 = 491,423.07/x
  3. Step 3: Cross multiply
    572,320.47x = 790,014.33 × 491,423.07
  4. Step 4: Simplify right side
    572,320.47x = 388,231,267,392.59
  5. Step 5: Solve for x
    x = 388,231,267,392.59/572,320.47
  6. Step 6: Final answer
    x = 678,345.94

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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.