Home / 688,521.40-1,032,927.90-208,709.80

Finding the Fourth Proportional to 688,521.40, 1,032,927.90 and 208,709.80

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Solution

The fourth proportional to 688,521.40, 1,032,927.90 and 208,709.80 is: 313,108.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    688,521.40 : 1,032,927.90 = 208,709.80 : x
  2. Step 2: Convert to fraction form
    688,521.40/1,032,927.90 = 208,709.80/x
  3. Step 3: Cross multiply
    688,521.40x = 1,032,927.90 × 208,709.80
  4. Step 4: Simplify right side
    688,521.40x = 215,582,175,423.42
  5. Step 5: Solve for x
    x = 215,582,175,423.42/688,521.40
  6. Step 6: Final answer
    x = 313,108.90

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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.