Home / 1,316,380.50-1,974,570.75-319,108.50

Finding the Fourth Proportional to 1,316,380.50, 1,974,570.75 and 319,108.50

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Solution

The fourth proportional to 1,316,380.50, 1,974,570.75 and 319,108.50 is: 478,662.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,316,380.50 : 1,974,570.75 = 319,108.50 : x
  2. Step 2: Convert to fraction form
    1,316,380.50/1,974,570.75 = 319,108.50/x
  3. Step 3: Cross multiply
    1,316,380.50x = 1,974,570.75 × 319,108.50
  4. Step 4: Simplify right side
    1,316,380.50x = 630,102,310,176.38
  5. Step 5: Solve for x
    x = 630,102,310,176.38/1,316,380.50
  6. Step 6: Final answer
    x = 478,662.75

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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.