Home / 448,103,419.40-672,155,129.10-420,893,640.20

Finding the Fourth Proportional to 448,103,419.40, 672,155,129.10 and 420,893,640.20

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Solution

The fourth proportional to 448,103,419.40, 672,155,129.10 and 420,893,640.20 is: 631,340,460.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    448,103,419.40 : 672,155,129.10 = 420,893,640.20 : x
  2. Step 2: Convert to fraction form
    448,103,419.40/672,155,129.10 = 420,893,640.20/x
  3. Step 3: Cross multiply
    448,103,419.40x = 672,155,129.10 × 420,893,640.20
  4. Step 4: Simplify right side
    448,103,419.40x = 282,905,819,065,999,936
  5. Step 5: Solve for x
    x = 282,905,819,065,999,936/448,103,419.40
  6. Step 6: Final answer
    x = 631,340,460.30

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.