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Finding the Fourth Proportional to 620,053.73, 855,607.86 and 348,151.50

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Solution

The fourth proportional to 620,053.73, 855,607.86 and 348,151.50 is: 480,411.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    620,053.73 : 855,607.86 = 348,151.50 : x
  2. Step 2: Convert to fraction form
    620,053.73/855,607.86 = 348,151.50/x
  3. Step 3: Cross multiply
    620,053.73x = 855,607.86 × 348,151.50
  4. Step 4: Simplify right side
    620,053.73x = 297,881,159,870.79
  5. Step 5: Solve for x
    x = 297,881,159,870.79/620,053.73
  6. Step 6: Final answer
    x = 480,411.85

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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.