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Finding the Fourth Proportional to 677,315.19, 934,705.50 and 371,419.50

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Solution

The fourth proportional to 677,315.19, 934,705.50 and 371,419.50 is: 512,564.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    677,315.19 : 934,705.50 = 371,419.50 : x
  2. Step 2: Convert to fraction form
    677,315.19/934,705.50 = 371,419.50/x
  3. Step 3: Cross multiply
    677,315.19x = 934,705.50 × 371,419.50
  4. Step 4: Simplify right side
    677,315.19x = 347,167,849,457.25
  5. Step 5: Solve for x
    x = 347,167,849,457.25/677,315.19
  6. Step 6: Final answer
    x = 512,564.69

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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.