Home / 640,060,339.60-960,090,509.40-442,789,440.40

Finding the Fourth Proportional to 640,060,339.60, 960,090,509.40 and 442,789,440.40

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Solution

The fourth proportional to 640,060,339.60, 960,090,509.40 and 442,789,440.40 is: 664,184,160.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    640,060,339.60 : 960,090,509.40 = 442,789,440.40 : x
  2. Step 2: Convert to fraction form
    640,060,339.60/960,090,509.40 = 442,789,440.40/x
  3. Step 3: Cross multiply
    640,060,339.60x = 960,090,509.40 × 442,789,440.40
  4. Step 4: Simplify right side
    640,060,339.60x = 425,117,939,390,576,896
  5. Step 5: Solve for x
    x = 425,117,939,390,576,896/640,060,339.60
  6. Step 6: Final answer
    x = 664,184,160.60

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1.5x scale

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.