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Finding the Fourth Proportional to 649,479.84, 896,254 and 355,124.18

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Solution

The fourth proportional to 649,479.84, 896,254 and 355,124.18 is: 490,055.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    649,479.84 : 896,254 = 355,124.18 : x
  2. Step 2: Convert to fraction form
    649,479.84/896,254 = 355,124.18/x
  3. Step 3: Cross multiply
    649,479.84x = 896,254 × 355,124.18
  4. Step 4: Simplify right side
    649,479.84x = 318,281,466,821.72
  5. Step 5: Solve for x
    x = 318,281,466,821.72/649,479.84
  6. Step 6: Final answer
    x = 490,055.96

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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.