Home / 839,879,465.60-1,259,819,198.40-666,417,123.20

Finding the Fourth Proportional to 839,879,465.60, 1,259,819,198.40 and 666,417,123.20

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Solution

The fourth proportional to 839,879,465.60, 1,259,819,198.40 and 666,417,123.20 is: 999,625,684.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    839,879,465.60 : 1,259,819,198.40 = 666,417,123.20 : x
  2. Step 2: Convert to fraction form
    839,879,465.60/1,259,819,198.40 = 666,417,123.20/x
  3. Step 3: Cross multiply
    839,879,465.60x = 1,259,819,198.40 × 666,417,123.20
  4. Step 4: Simplify right side
    839,879,465.60x = 839,565,085,949,858,176
  5. Step 5: Solve for x
    x = 839,565,085,949,858,176/839,879,465.60
  6. Step 6: Final answer
    x = 999,625,684.80

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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.