Home / 912,049.89-1,258,631.39-498,591.67

Finding the Fourth Proportional to 912,049.89, 1,258,631.39 and 498,591.67

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Solution

The fourth proportional to 912,049.89, 1,258,631.39 and 498,591.67 is: 688,057.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    912,049.89 : 1,258,631.39 = 498,591.67 : x
  2. Step 2: Convert to fraction form
    912,049.89/1,258,631.39 = 498,591.67/x
  3. Step 3: Cross multiply
    912,049.89x = 1,258,631.39 × 498,591.67
  4. Step 4: Simplify right side
    912,049.89x = 627,543,117,868.41
  5. Step 5: Solve for x
    x = 627,543,117,868.41/912,049.89
  6. Step 6: Final answer
    x = 688,057.88

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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.