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Finding the Fourth Proportional to 828,480, 1,143,291.51 and 465,903.76

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Solution

The fourth proportional to 828,480, 1,143,291.51 and 465,903.76 is: 642,941.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    828,480 : 1,143,291.51 = 465,903.76 : x
  2. Step 2: Convert to fraction form
    828,480/1,143,291.51 = 465,903.76/x
  3. Step 3: Cross multiply
    828,480x = 1,143,291.51 × 465,903.76
  4. Step 4: Simplify right side
    828,480x = 532,663,813,285.08
  5. Step 5: Solve for x
    x = 532,663,813,285.08/828,480
  6. Step 6: Final answer
    x = 642,941.06

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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.