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Finding the Fourth Proportional to 553,602.90, 830,793.15 and 354,407.70

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Solution

The fourth proportional to 553,602.90, 830,793.15 and 354,407.70 is: 531,860.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    553,602.90 : 830,793.15 = 354,407.70 : x
  2. Step 2: Convert to fraction form
    553,602.90/830,793.15 = 354,407.70/x
  3. Step 3: Cross multiply
    553,602.90x = 830,793.15 × 354,407.70
  4. Step 4: Simplify right side
    553,602.90x = 294,439,489,467.26
  5. Step 5: Solve for x
    x = 294,439,489,467.26/553,602.90
  6. Step 6: Final answer
    x = 531,860.45

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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.