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Finding the Fourth Proportional to 553,667.80, 830,501.70 and 413,699.80

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Solution

The fourth proportional to 553,667.80, 830,501.70 and 413,699.80 is: 620,549.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    553,667.80 : 830,501.70 = 413,699.80 : x
  2. Step 2: Convert to fraction form
    553,667.80/830,501.70 = 413,699.80/x
  3. Step 3: Cross multiply
    553,667.80x = 830,501.70 × 413,699.80
  4. Step 4: Simplify right side
    553,667.80x = 343,578,387,189.66
  5. Step 5: Solve for x
    x = 343,578,387,189.66/553,667.80
  6. Step 6: Final answer
    x = 620,549.70

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Similar ratio
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1.5x scale

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.