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Finding the Fourth Proportional to 610,189.52, 842,089.80 and 355,499.60

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Solution

The fourth proportional to 610,189.52, 842,089.80 and 355,499.60 is: 490,605.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    610,189.52 : 842,089.80 = 355,499.60 : x
  2. Step 2: Convert to fraction form
    610,189.52/842,089.80 = 355,499.60/x
  3. Step 3: Cross multiply
    610,189.52x = 842,089.80 × 355,499.60
  4. Step 4: Simplify right side
    610,189.52x = 299,362,587,064.08
  5. Step 5: Solve for x
    x = 299,362,587,064.08/610,189.52
  6. Step 6: Final answer
    x = 490,605.91

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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.