Home / 672,603,913.40-1,009,065,302.40-345,129,969.20

Finding the Fourth Proportional to 672,603,913.40, 1,009,065,302.40 and 345,129,969.20

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Solution

The fourth proportional to 672,603,913.40, 1,009,065,302.40 and 345,129,969.20 is: 517,776,762.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    672,603,913.40 : 1,009,065,302.40 = 345,129,969.20 : x
  2. Step 2: Convert to fraction form
    672,603,913.40/1,009,065,302.40 = 345,129,969.20/x
  3. Step 3: Cross multiply
    672,603,913.40x = 1,009,065,302.40 × 345,129,969.20
  4. Step 4: Simplify right side
    672,603,913.40x = 348,258,676,738,100,672
  5. Step 5: Solve for x
    x = 348,258,676,738,100,672/672,603,913.40
  6. Step 6: Final answer
    x = 517,776,762.52

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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.