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Finding the Fourth Proportional to 620,472,064.94, 856,251,240.76 and 342,018,238.58

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Solution

The fourth proportional to 620,472,064.94, 856,251,240.76 and 342,018,238.58 is: 471,985,054.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    620,472,064.94 : 856,251,240.76 = 342,018,238.58 : x
  2. Step 2: Convert to fraction form
    620,472,064.94/856,251,240.76 = 342,018,238.58/x
  3. Step 3: Cross multiply
    620,472,064.94x = 856,251,240.76 × 342,018,238.58
  4. Step 4: Simplify right side
    620,472,064.94x = 292,853,541,146,674,688
  5. Step 5: Solve for x
    x = 292,853,541,146,674,688/620,472,064.94
  6. Step 6: Final answer
    x = 471,985,054.11

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