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Finding the Fourth Proportional to 657,798.80, 986,730.60 and 342,870.80

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Solution

The fourth proportional to 657,798.80, 986,730.60 and 342,870.80 is: 514,323.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    657,798.80 : 986,730.60 = 342,870.80 : x
  2. Step 2: Convert to fraction form
    657,798.80/986,730.60 = 342,870.80/x
  3. Step 3: Cross multiply
    657,798.80x = 986,730.60 × 342,870.80
  4. Step 4: Simplify right side
    657,798.80x = 338,321,110,206.48
  5. Step 5: Solve for x
    x = 338,321,110,206.48/657,798.80
  6. Step 6: Final answer
    x = 514,323.09

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.