Home / 784,903.80-1,177,355.70-311,345.40

Finding the Fourth Proportional to 784,903.80, 1,177,355.70 and 311,345.40

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Solution

The fourth proportional to 784,903.80, 1,177,355.70 and 311,345.40 is: 467,018.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    784,903.80 : 1,177,355.70 = 311,345.40 : x
  2. Step 2: Convert to fraction form
    784,903.80/1,177,355.70 = 311,345.40/x
  3. Step 3: Cross multiply
    784,903.80x = 1,177,355.70 × 311,345.40
  4. Step 4: Simplify right side
    784,903.80x = 366,564,281,358.78
  5. Step 5: Solve for x
    x = 366,564,281,358.78/784,903.80
  6. Step 6: Final answer
    x = 467,018.10

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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.