Home / 1,478,686.40-2,039,811.47-1,284,658.15

Finding the Fourth Proportional to 1,478,686.40, 2,039,811.47 and 1,284,658.15

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Solution

The fourth proportional to 1,478,686.40, 2,039,811.47 and 1,284,658.15 is: 1,772,154.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,478,686.40 : 2,039,811.47 = 1,284,658.15 : x
  2. Step 2: Convert to fraction form
    1,478,686.40/2,039,811.47 = 1,284,658.15/x
  3. Step 3: Cross multiply
    1,478,686.40x = 2,039,811.47 × 1,284,658.15
  4. Step 4: Simplify right side
    1,478,686.40x = 2,620,460,429,398.98
  5. Step 5: Solve for x
    x = 2,620,460,429,398.98/1,478,686.40
  6. Step 6: Final answer
    x = 1,772,154.28

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.