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Finding the Fourth Proportional to 710,418.36, 980,386.02 and 388,132.32

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Solution

The fourth proportional to 710,418.36, 980,386.02 and 388,132.32 is: 535,627.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    710,418.36 : 980,386.02 = 388,132.32 : x
  2. Step 2: Convert to fraction form
    710,418.36/980,386.02 = 388,132.32/x
  3. Step 3: Cross multiply
    710,418.36x = 980,386.02 × 388,132.32
  4. Step 4: Simplify right side
    710,418.36x = 380,519,500,438.17
  5. Step 5: Solve for x
    x = 380,519,500,438.17/710,418.36
  6. Step 6: Final answer
    x = 535,627.35

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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.