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Finding the Fourth Proportional to 676,804.48, 934,088.16 and 390,267.52

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Solution

The fourth proportional to 676,804.48, 934,088.16 and 390,267.52 is: 538,625.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    676,804.48 : 934,088.16 = 390,267.52 : x
  2. Step 2: Convert to fraction form
    676,804.48/934,088.16 = 390,267.52/x
  3. Step 3: Cross multiply
    676,804.48x = 934,088.16 × 390,267.52
  4. Step 4: Simplify right side
    676,804.48x = 364,544,269,664.56
  5. Step 5: Solve for x
    x = 364,544,269,664.56/676,804.48
  6. Step 6: Final answer
    x = 538,625.67

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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.