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Finding the Fourth Proportional to 553,342.80, 830,014.20 and 453,615.60

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Solution

The fourth proportional to 553,342.80, 830,014.20 and 453,615.60 is: 680,423.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    553,342.80 : 830,014.20 = 453,615.60 : x
  2. Step 2: Convert to fraction form
    553,342.80/830,014.20 = 453,615.60/x
  3. Step 3: Cross multiply
    553,342.80x = 830,014.20 × 453,615.60
  4. Step 4: Simplify right side
    553,342.80x = 376,507,389,341.52
  5. Step 5: Solve for x
    x = 376,507,389,341.52/553,342.80
  6. Step 6: Final answer
    x = 680,423.40

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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.