Home / 711,643.10-982,069.83-389,352.20

Finding the Fourth Proportional to 711,643.10, 982,069.83 and 389,352.20

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Solution

The fourth proportional to 711,643.10, 982,069.83 and 389,352.20 is: 537,307.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    711,643.10 : 982,069.83 = 389,352.20 : x
  2. Step 2: Convert to fraction form
    711,643.10/982,069.83 = 389,352.20/x
  3. Step 3: Cross multiply
    711,643.10x = 982,069.83 × 389,352.20
  4. Step 4: Simplify right side
    711,643.10x = 382,371,043,953.78
  5. Step 5: Solve for x
    x = 382,371,043,953.78/711,643.10
  6. Step 6: Final answer
    x = 537,307.32

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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.