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Finding the Fourth Proportional to 517,939.40, 714,866.66 and 348,075.11

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Solution

The fourth proportional to 517,939.40, 714,866.66 and 348,075.11 is: 480,417.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    517,939.40 : 714,866.66 = 348,075.11 : x
  2. Step 2: Convert to fraction form
    517,939.40/714,866.66 = 348,075.11/x
  3. Step 3: Cross multiply
    517,939.40x = 714,866.66 × 348,075.11
  4. Step 4: Simplify right side
    517,939.40x = 248,827,286,000.12
  5. Step 5: Solve for x
    x = 248,827,286,000.12/517,939.40
  6. Step 6: Final answer
    x = 480,417.76

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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.