Home / 638,746.61-958,281.02-212,284.67

Finding the Fourth Proportional to 638,746.61, 958,281.02 and 212,284.67

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Solution

The fourth proportional to 638,746.61, 958,281.02 and 212,284.67 is: 318,480.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,746.61 : 958,281.02 = 212,284.67 : x
  2. Step 2: Convert to fraction form
    638,746.61/958,281.02 = 212,284.67/x
  3. Step 3: Cross multiply
    638,746.61x = 958,281.02 × 212,284.67
  4. Step 4: Simplify right side
    638,746.61x = 203,428,364,245.14
  5. Step 5: Solve for x
    x = 203,428,364,245.14/638,746.61
  6. Step 6: Final answer
    x = 318,480.54

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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.