Home / 620,958,085.60-931,437,128.40-528,629,069.20

Finding the Fourth Proportional to 620,958,085.60, 931,437,128.40 and 528,629,069.20

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Solution

The fourth proportional to 620,958,085.60, 931,437,128.40 and 528,629,069.20 is: 792,943,603.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    620,958,085.60 : 931,437,128.40 = 528,629,069.20 : x
  2. Step 2: Convert to fraction form
    620,958,085.60/931,437,128.40 = 528,629,069.20/x
  3. Step 3: Cross multiply
    620,958,085.60x = 931,437,128.40 × 528,629,069.20
  4. Step 4: Simplify right side
    620,958,085.60x = 492,384,742,204,412,864
  5. Step 5: Solve for x
    x = 492,384,742,204,412,864/620,958,085.60
  6. Step 6: Final answer
    x = 792,943,603.80

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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.