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Finding the Fourth Proportional to 805,772,560.40, 1,208,658,840.60 and 805,772,560.40

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Solution

The fourth proportional to 805,772,560.40, 1,208,658,840.60 and 805,772,560.40 is: 1,208,658,840.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    805,772,560.40 : 1,208,658,840.60 = 805,772,560.40 : x
  2. Step 2: Convert to fraction form
    805,772,560.40/1,208,658,840.60 = 805,772,560.40/x
  3. Step 3: Cross multiply
    805,772,560.40x = 1,208,658,840.60 × 805,772,560.40
  4. Step 4: Simplify right side
    805,772,560.40x = 973,904,128,640,357,376
  5. Step 5: Solve for x
    x = 973,904,128,640,357,376/805,772,560.40
  6. Step 6: Final answer
    x = 1,208,658,840.60

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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.