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Finding the Fourth Proportional to 710,361.36, 980,298 and 408,555.36

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Solution

The fourth proportional to 710,361.36, 980,298 and 408,555.36 is: 563,806.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    710,361.36 : 980,298 = 408,555.36 : x
  2. Step 2: Convert to fraction form
    710,361.36/980,298 = 408,555.36/x
  3. Step 3: Cross multiply
    710,361.36x = 980,298 × 408,555.36
  4. Step 4: Simplify right side
    710,361.36x = 400,506,002,297.28
  5. Step 5: Solve for x
    x = 400,506,002,297.28/710,361.36
  6. Step 6: Final answer
    x = 563,806.01

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1.5x scale

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.