Home / 880,249,852.40-1,320,374,778.60-421,084,828.40

Finding the Fourth Proportional to 880,249,852.40, 1,320,374,778.60 and 421,084,828.40

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Solution

The fourth proportional to 880,249,852.40, 1,320,374,778.60 and 421,084,828.40 is: 631,627,242.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    880,249,852.40 : 1,320,374,778.60 = 421,084,828.40 : x
  2. Step 2: Convert to fraction form
    880,249,852.40/1,320,374,778.60 = 421,084,828.40/x
  3. Step 3: Cross multiply
    880,249,852.40x = 1,320,374,778.60 × 421,084,828.40
  4. Step 4: Simplify right side
    880,249,852.40x = 555,989,787,070,468,928
  5. Step 5: Solve for x
    x = 555,989,787,070,468,928/880,249,852.40
  6. Step 6: Final answer
    x = 631,627,242.60

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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.