Home / 839,281.70-1,258,788.90-278,316.20

Finding the Fourth Proportional to 839,281.70, 1,258,788.90 and 278,316.20

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Solution

The fourth proportional to 839,281.70, 1,258,788.90 and 278,316.20 is: 417,429.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    839,281.70 : 1,258,788.90 = 278,316.20 : x
  2. Step 2: Convert to fraction form
    839,281.70/1,258,788.90 = 278,316.20/x
  3. Step 3: Cross multiply
    839,281.70x = 1,258,788.90 × 278,316.20
  4. Step 4: Simplify right side
    839,281.70x = 350,341,343,250.18
  5. Step 5: Solve for x
    x = 350,341,343,250.18/839,281.70
  6. Step 6: Final answer
    x = 417,429.98

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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.