Home / 693,152.40-1,039,827.78-213,420.79

Finding the Fourth Proportional to 693,152.40, 1,039,827.78 and 213,420.79

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Solution

The fourth proportional to 693,152.40, 1,039,827.78 and 213,420.79 is: 320,161.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    693,152.40 : 1,039,827.78 = 213,420.79 : x
  2. Step 2: Convert to fraction form
    693,152.40/1,039,827.78 = 213,420.79/x
  3. Step 3: Cross multiply
    693,152.40x = 1,039,827.78 × 213,420.79
  4. Step 4: Simplify right side
    693,152.40x = 221,920,866,271.55
  5. Step 5: Solve for x
    x = 221,920,866,271.55/693,152.40
  6. Step 6: Final answer
    x = 320,161.72

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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.