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Finding the Fourth Proportional to 553,667.70, 830,501.55 and 548,418.90

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Solution

The fourth proportional to 553,667.70, 830,501.55 and 548,418.90 is: 822,628.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    553,667.70 : 830,501.55 = 548,418.90 : x
  2. Step 2: Convert to fraction form
    553,667.70/830,501.55 = 548,418.90/x
  3. Step 3: Cross multiply
    553,667.70x = 830,501.55 × 548,418.90
  4. Step 4: Simplify right side
    553,667.70x = 455,462,746,499.30
  5. Step 5: Solve for x
    x = 455,462,746,499.30/553,667.70
  6. Step 6: Final answer
    x = 822,628.35

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Double scale
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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.