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Finding the Fourth Proportional to 817,424.76, 1,128,035.34 and 459,728.76

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Solution

The fourth proportional to 817,424.76, 1,128,035.34 and 459,728.76 is: 634,419.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    817,424.76 : 1,128,035.34 = 459,728.76 : x
  2. Step 2: Convert to fraction form
    817,424.76/1,128,035.34 = 459,728.76/x
  3. Step 3: Cross multiply
    817,424.76x = 1,128,035.34 × 459,728.76
  4. Step 4: Simplify right side
    817,424.76x = 518,590,288,094.38
  5. Step 5: Solve for x
    x = 518,590,288,094.38/817,424.76
  6. Step 6: Final answer
    x = 634,419.60

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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.