Home / 1,019,931,985.80-1,529,897,978.70-330,334,144.20

Finding the Fourth Proportional to 1,019,931,985.80, 1,529,897,978.70 and 330,334,144.20

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Solution

The fourth proportional to 1,019,931,985.80, 1,529,897,978.70 and 330,334,144.20 is: 495,501,216.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,019,931,985.80 : 1,529,897,978.70 = 330,334,144.20 : x
  2. Step 2: Convert to fraction form
    1,019,931,985.80/1,529,897,978.70 = 330,334,144.20/x
  3. Step 3: Cross multiply
    1,019,931,985.80x = 1,529,897,978.70 × 330,334,144.20
  4. Step 4: Simplify right side
    1,019,931,985.80x = 505,377,539,507,174,336
  5. Step 5: Solve for x
    x = 505,377,539,507,174,336/1,019,931,985.80
  6. Step 6: Final answer
    x = 495,501,216.30

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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.