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Finding the Fourth Proportional to 416,869.84, 575,478.68 and 279,285.64

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Solution

The fourth proportional to 416,869.84, 575,478.68 and 279,285.64 is: 385,547.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    416,869.84 : 575,478.68 = 279,285.64 : x
  2. Step 2: Convert to fraction form
    416,869.84/575,478.68 = 279,285.64/x
  3. Step 3: Cross multiply
    416,869.84x = 575,478.68 × 279,285.64
  4. Step 4: Simplify right side
    416,869.84x = 160,722,931,450.16
  5. Step 5: Solve for x
    x = 160,722,931,450.16/416,869.84
  6. Step 6: Final answer
    x = 385,547.04

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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.