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Finding the Fourth Proportional to 634,618.16, 875,768.16 and 348,136.28

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Solution

The fourth proportional to 634,618.16, 875,768.16 and 348,136.28 is: 480,425.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    634,618.16 : 875,768.16 = 348,136.28 : x
  2. Step 2: Convert to fraction form
    634,618.16/875,768.16 = 348,136.28/x
  3. Step 3: Cross multiply
    634,618.16x = 875,768.16 × 348,136.28
  4. Step 4: Simplify right side
    634,618.16x = 304,886,669,364.85
  5. Step 5: Solve for x
    x = 304,886,669,364.85/634,618.16
  6. Step 6: Final answer
    x = 480,425.38

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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.