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Finding the Fourth Proportional to 518,810.13, 716,117.49 and 304,019.37

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Solution

The fourth proportional to 518,810.13, 716,117.49 and 304,019.37 is: 419,640.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,810.13 : 716,117.49 = 304,019.37 : x
  2. Step 2: Convert to fraction form
    518,810.13/716,117.49 = 304,019.37/x
  3. Step 3: Cross multiply
    518,810.13x = 716,117.49 × 304,019.37
  4. Step 4: Simplify right side
    518,810.13x = 217,713,588,155.78
  5. Step 5: Solve for x
    x = 217,713,588,155.78/518,810.13
  6. Step 6: Final answer
    x = 419,640.20

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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.