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Finding the Fourth Proportional to 519,316.90, 778,975.35 and 342,024.10

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Solution

The fourth proportional to 519,316.90, 778,975.35 and 342,024.10 is: 513,036.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,316.90 : 778,975.35 = 342,024.10 : x
  2. Step 2: Convert to fraction form
    519,316.90/778,975.35 = 342,024.10/x
  3. Step 3: Cross multiply
    519,316.90x = 778,975.35 × 342,024.10
  4. Step 4: Simplify right side
    519,316.90x = 266,428,343,005.94
  5. Step 5: Solve for x
    x = 266,428,343,005.94/519,316.90
  6. Step 6: Final answer
    x = 513,036.15

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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.