Home / 1,330,492.40-1,988,449.13-971,420.28

Finding the Fourth Proportional to 1,330,492.40, 1,988,449.13 and 971,420.28

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Solution

The fourth proportional to 1,330,492.40, 1,988,449.13 and 971,420.28 is: 1,451,808.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,330,492.40 : 1,988,449.13 = 971,420.28 : x
  2. Step 2: Convert to fraction form
    1,330,492.40/1,988,449.13 = 971,420.28/x
  3. Step 3: Cross multiply
    1,330,492.40x = 1,988,449.13 × 971,420.28
  4. Step 4: Simplify right side
    1,330,492.40x = 1,931,619,805,773.26
  5. Step 5: Solve for x
    x = 1,931,619,805,773.26/1,330,492.40
  6. Step 6: Final answer
    x = 1,451,808.23

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.