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Finding the Fourth Proportional to 634,886.16, 876,168.12 and 348,416.56

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Solution

The fourth proportional to 634,886.16, 876,168.12 and 348,416.56 is: 480,828.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    634,886.16 : 876,168.12 = 348,416.56 : x
  2. Step 2: Convert to fraction form
    634,886.16/876,168.12 = 348,416.56/x
  3. Step 3: Cross multiply
    634,886.16x = 876,168.12 × 348,416.56
  4. Step 4: Simplify right side
    634,886.16x = 305,271,482,352.07
  5. Step 5: Solve for x
    x = 305,271,482,352.07/634,886.16
  6. Step 6: Final answer
    x = 480,828.69

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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.