Home / 1,316,485.80-1,816,656.12-772,643.70

Finding the Fourth Proportional to 1,316,485.80, 1,816,656.12 and 772,643.70

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Solution

The fourth proportional to 1,316,485.80, 1,816,656.12 and 772,643.70 is: 1,066,192.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,316,485.80 : 1,816,656.12 = 772,643.70 : x
  2. Step 2: Convert to fraction form
    1,316,485.80/1,816,656.12 = 772,643.70/x
  3. Step 3: Cross multiply
    1,316,485.80x = 1,816,656.12 × 772,643.70
  4. Step 4: Simplify right side
    1,316,485.80x = 1,403,627,906,184.44
  5. Step 5: Solve for x
    x = 1,403,627,906,184.44/1,316,485.80
  6. Step 6: Final answer
    x = 1,066,192.97

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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.