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Finding the Fourth Proportional to 528,994.80, 730,510.83 and 368,289.18

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Solution

The fourth proportional to 528,994.80, 730,510.83 and 368,289.18 is: 508,585.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,994.80 : 730,510.83 = 368,289.18 : x
  2. Step 2: Convert to fraction form
    528,994.80/730,510.83 = 368,289.18/x
  3. Step 3: Cross multiply
    528,994.80x = 730,510.83 × 368,289.18
  4. Step 4: Simplify right side
    528,994.80x = 269,039,234,561.82
  5. Step 5: Solve for x
    x = 269,039,234,561.82/528,994.80
  6. Step 6: Final answer
    x = 508,585.78

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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.