Home / 839,808,119.40-1,259,712,179.10-778,586,116.20

Finding the Fourth Proportional to 839,808,119.40, 1,259,712,179.10 and 778,586,116.20

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Solution

The fourth proportional to 839,808,119.40, 1,259,712,179.10 and 778,586,116.20 is: 1,167,879,174.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    839,808,119.40 : 1,259,712,179.10 = 778,586,116.20 : x
  2. Step 2: Convert to fraction form
    839,808,119.40/1,259,712,179.10 = 778,586,116.20/x
  3. Step 3: Cross multiply
    839,808,119.40x = 1,259,712,179.10 × 778,586,116.20
  4. Step 4: Simplify right side
    839,808,119.40x = 980,794,413,055,307,776
  5. Step 5: Solve for x
    x = 980,794,413,055,307,776/839,808,119.40
  6. Step 6: Final answer
    x = 1,167,879,174.30

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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.