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Finding the Fourth Proportional to 519,345.60, 779,018.40 and 342,052.80

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Solution

The fourth proportional to 519,345.60, 779,018.40 and 342,052.80 is: 513,079.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,345.60 : 779,018.40 = 342,052.80 : x
  2. Step 2: Convert to fraction form
    519,345.60/779,018.40 = 342,052.80/x
  3. Step 3: Cross multiply
    519,345.60x = 779,018.40 × 342,052.80
  4. Step 4: Simplify right side
    519,345.60x = 266,465,424,971.52
  5. Step 5: Solve for x
    x = 266,465,424,971.52/519,345.60
  6. Step 6: Final answer
    x = 513,079.20

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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.