Home / 472,824,075.20-709,236,112.80-290,479,985.60

Finding the Fourth Proportional to 472,824,075.20, 709,236,112.80 and 290,479,985.60

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Solution

The fourth proportional to 472,824,075.20, 709,236,112.80 and 290,479,985.60 is: 435,719,978.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    472,824,075.20 : 709,236,112.80 = 290,479,985.60 : x
  2. Step 2: Convert to fraction form
    472,824,075.20/709,236,112.80 = 290,479,985.60/x
  3. Step 3: Cross multiply
    472,824,075.20x = 709,236,112.80 × 290,479,985.60
  4. Step 4: Simplify right side
    472,824,075.20x = 206,018,895,833,143,968
  5. Step 5: Solve for x
    x = 206,018,895,833,143,968/472,824,075.20
  6. Step 6: Final answer
    x = 435,719,978.40

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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.