Home / 808,981.60-1,213,472.40-389,077.60

Finding the Fourth Proportional to 808,981.60, 1,213,472.40 and 389,077.60

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Solution

The fourth proportional to 808,981.60, 1,213,472.40 and 389,077.60 is: 583,616.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    808,981.60 : 1,213,472.40 = 389,077.60 : x
  2. Step 2: Convert to fraction form
    808,981.60/1,213,472.40 = 389,077.60/x
  3. Step 3: Cross multiply
    808,981.60x = 1,213,472.40 × 389,077.60
  4. Step 4: Simplify right side
    808,981.60x = 472,134,929,058.24
  5. Step 5: Solve for x
    x = 472,134,929,058.24/808,981.60
  6. Step 6: Final answer
    x = 583,616.40

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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.