Home / 839,290.70-1,258,802.40-278,325.20

Finding the Fourth Proportional to 839,290.70, 1,258,802.40 and 278,325.20

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Solution

The fourth proportional to 839,290.70, 1,258,802.40 and 278,325.20 is: 417,443.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    839,290.70 : 1,258,802.40 = 278,325.20 : x
  2. Step 2: Convert to fraction form
    839,290.70/1,258,802.40 = 278,325.20/x
  3. Step 3: Cross multiply
    839,290.70x = 1,258,802.40 × 278,325.20
  4. Step 4: Simplify right side
    839,290.70x = 350,356,429,740.48
  5. Step 5: Solve for x
    x = 350,356,429,740.48/839,290.70
  6. Step 6: Final answer
    x = 417,443.48

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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.