Home / 640,129,320.90-960,911,426.70-495,205,360.20

Finding the Fourth Proportional to 640,129,320.90, 960,911,426.70 and 495,205,360.20

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Solution

The fourth proportional to 640,129,320.90, 960,911,426.70 and 495,205,360.20 is: 743,363,057.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    640,129,320.90 : 960,911,426.70 = 495,205,360.20 : x
  2. Step 2: Convert to fraction form
    640,129,320.90/960,911,426.70 = 495,205,360.20/x
  3. Step 3: Cross multiply
    640,129,320.90x = 960,911,426.70 × 495,205,360.20
  4. Step 4: Simplify right side
    640,129,320.90x = 475,848,489,179,269,440
  5. Step 5: Solve for x
    x = 475,848,489,179,269,440/640,129,320.90
  6. Step 6: Final answer
    x = 743,363,057.50

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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.