Home / 1,129,748,370.40-1,559,012,987.28-621,107,380.48

Finding the Fourth Proportional to 1,129,748,370.40, 1,559,012,987.28 and 621,107,380.48

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Solution

The fourth proportional to 1,129,748,370.40, 1,559,012,987.28 and 621,107,380.48 is: 857,106,323.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,129,748,370.40 : 1,559,012,987.28 = 621,107,380.48 : x
  2. Step 2: Convert to fraction form
    1,129,748,370.40/1,559,012,987.28 = 621,107,380.48/x
  3. Step 3: Cross multiply
    1,129,748,370.40x = 1,559,012,987.28 × 621,107,380.48
  4. Step 4: Simplify right side
    1,129,748,370.40x = 968,314,472,663,780,352
  5. Step 5: Solve for x
    x = 968,314,472,663,780,352/1,129,748,370.40
  6. Step 6: Final answer
    x = 857,106,323.88

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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.