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Finding the Fourth Proportional to 553,613.70, 830,420.55 and 548,948.10

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Solution

The fourth proportional to 553,613.70, 830,420.55 and 548,948.10 is: 823,422.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    553,613.70 : 830,420.55 = 548,948.10 : x
  2. Step 2: Convert to fraction form
    553,613.70/830,420.55 = 548,948.10/x
  3. Step 3: Cross multiply
    553,613.70x = 830,420.55 × 548,948.10
  4. Step 4: Simplify right side
    553,613.70x = 455,857,783,123.46
  5. Step 5: Solve for x
    x = 455,857,783,123.46/553,613.70
  6. Step 6: Final answer
    x = 823,422.15

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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.