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Finding the Fourth Proportional to 1,316,531.32, 1,816,802.82 and 712,919.32

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Solution

The fourth proportional to 1,316,531.32, 1,816,802.82 and 712,919.32 is: 983,823.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,316,531.32 : 1,816,802.82 = 712,919.32 : x
  2. Step 2: Convert to fraction form
    1,316,531.32/1,816,802.82 = 712,919.32/x
  3. Step 3: Cross multiply
    1,316,531.32x = 1,816,802.82 × 712,919.32
  4. Step 4: Simplify right side
    1,316,531.32x = 1,295,233,831,008.48
  5. Step 5: Solve for x
    x = 1,295,233,831,008.48/1,316,531.32
  6. Step 6: Final answer
    x = 983,823.03

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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.