Home / 920,440,968.53-1,270,200,122.93-502,753,128.53

Finding the Fourth Proportional to 920,440,968.53, 1,270,200,122.93 and 502,753,128.53

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Solution

The fourth proportional to 920,440,968.53, 1,270,200,122.93 and 502,753,128.53 is: 693,794,721.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    920,440,968.53 : 1,270,200,122.93 = 502,753,128.53 : x
  2. Step 2: Convert to fraction form
    920,440,968.53/1,270,200,122.93 = 502,753,128.53/x
  3. Step 3: Cross multiply
    920,440,968.53x = 1,270,200,122.93 × 502,753,128.53
  4. Step 4: Simplify right side
    920,440,968.53x = 638,597,085,657,153,920
  5. Step 5: Solve for x
    x = 638,597,085,657,153,920/920,440,968.53
  6. Step 6: Final answer
    x = 693,794,721.76

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.