Home / 660,719,752.40-989,945,887.80-314,928,808.40

Finding the Fourth Proportional to 660,719,752.40, 989,945,887.80 and 314,928,808.40

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Solution

The fourth proportional to 660,719,752.40, 989,945,887.80 and 314,928,808.40 is: 471,852,820.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,719,752.40 : 989,945,887.80 = 314,928,808.40 : x
  2. Step 2: Convert to fraction form
    660,719,752.40/989,945,887.80 = 314,928,808.40/x
  3. Step 3: Cross multiply
    660,719,752.40x = 989,945,887.80 × 314,928,808.40
  4. Step 4: Simplify right side
    660,719,752.40x = 311,762,478,825,334,080
  5. Step 5: Solve for x
    x = 311,762,478,825,334,080/660,719,752.40
  6. Step 6: Final answer
    x = 471,852,820.64

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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.