Home / 686,946.18-948,455.82-429,216.34

Finding the Fourth Proportional to 686,946.18, 948,455.82 and 429,216.34

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Solution

The fourth proportional to 686,946.18, 948,455.82 and 429,216.34 is: 592,612.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    686,946.18 : 948,455.82 = 429,216.34 : x
  2. Step 2: Convert to fraction form
    686,946.18/948,455.82 = 429,216.34/x
  3. Step 3: Cross multiply
    686,946.18x = 948,455.82 × 429,216.34
  4. Step 4: Simplify right side
    686,946.18x = 407,092,735,712.10
  5. Step 5: Solve for x
    x = 407,092,735,712.10/686,946.18
  6. Step 6: Final answer
    x = 592,612.27

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.