Home / 487,362,346.80-730,971,611.52-142,223,303.76

Finding the Fourth Proportional to 487,362,346.80, 730,971,611.52 and 142,223,303.76

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Solution

The fourth proportional to 487,362,346.80, 730,971,611.52 and 142,223,303.76 is: 213,313,971.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,362,346.80 : 730,971,611.52 = 142,223,303.76 : x
  2. Step 2: Convert to fraction form
    487,362,346.80/730,971,611.52 = 142,223,303.76/x
  3. Step 3: Cross multiply
    487,362,346.80x = 730,971,611.52 × 142,223,303.76
  4. Step 4: Simplify right side
    487,362,346.80x = 103,961,197,545,145,664
  5. Step 5: Solve for x
    x = 103,961,197,545,145,664/487,362,346.80
  6. Step 6: Final answer
    x = 213,313,971.07

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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.