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Finding the Fourth Proportional to 626,603,728.40, 864,736,481.73 and 375,748,961.77

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Solution

The fourth proportional to 626,603,728.40, 864,736,481.73 and 375,748,961.77 is: 518,547,561.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    626,603,728.40 : 864,736,481.73 = 375,748,961.77 : x
  2. Step 2: Convert to fraction form
    626,603,728.40/864,736,481.73 = 375,748,961.77/x
  3. Step 3: Cross multiply
    626,603,728.40x = 864,736,481.73 × 375,748,961.77
  4. Step 4: Simplify right side
    626,603,728.40x = 324,923,835,217,180,032
  5. Step 5: Solve for x
    x = 324,923,835,217,180,032/626,603,728.40
  6. Step 6: Final answer
    x = 518,547,561.23

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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.