Home / 640,060,329.60-960,090,494.40-442,789,430.40

Finding the Fourth Proportional to 640,060,329.60, 960,090,494.40 and 442,789,430.40

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Solution

The fourth proportional to 640,060,329.60, 960,090,494.40 and 442,789,430.40 is: 664,184,145.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    640,060,329.60 : 960,090,494.40 = 442,789,430.40 : x
  2. Step 2: Convert to fraction form
    640,060,329.60/960,090,494.40 = 442,789,430.40/x
  3. Step 3: Cross multiply
    640,060,329.60x = 960,090,494.40 × 442,789,430.40
  4. Step 4: Simplify right side
    640,060,329.60x = 425,117,923,147,830,336
  5. Step 5: Solve for x
    x = 425,117,923,147,830,336/640,060,329.60
  6. Step 6: Final answer
    x = 664,184,145.60

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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.