Home / 1,209,678.80-1,815,209.40-462,261.20

Finding the Fourth Proportional to 1,209,678.80, 1,815,209.40 and 462,261.20

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Solution

The fourth proportional to 1,209,678.80, 1,815,209.40 and 462,261.20 is: 693,655.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,209,678.80 : 1,815,209.40 = 462,261.20 : x
  2. Step 2: Convert to fraction form
    1,209,678.80/1,815,209.40 = 462,261.20/x
  3. Step 3: Cross multiply
    1,209,678.80x = 1,815,209.40 × 462,261.20
  4. Step 4: Simplify right side
    1,209,678.80x = 839,100,875,495.28
  5. Step 5: Solve for x
    x = 839,100,875,495.28/1,209,678.80
  6. Step 6: Final answer
    x = 693,655.93

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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.