Home / 518,275,598.40-776,816,200.80-211,366,209.60

Finding the Fourth Proportional to 518,275,598.40, 776,816,200.80 and 211,366,209.60

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Solution

The fourth proportional to 518,275,598.40, 776,816,200.80 and 211,366,209.60 is: 316,805,762.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,275,598.40 : 776,816,200.80 = 211,366,209.60 : x
  2. Step 2: Convert to fraction form
    518,275,598.40/776,816,200.80 = 211,366,209.60/x
  3. Step 3: Cross multiply
    518,275,598.40x = 776,816,200.80 × 211,366,209.60
  4. Step 4: Simplify right side
    518,275,598.40x = 164,192,695,918,968,480
  5. Step 5: Solve for x
    x = 164,192,695,918,968,480/518,275,598.40
  6. Step 6: Final answer
    x = 316,805,762.08

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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.