Home / 612,828.90-845,683.65-340,889.22

Finding the Fourth Proportional to 612,828.90, 845,683.65 and 340,889.22

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Solution

The fourth proportional to 612,828.90, 845,683.65 and 340,889.22 is: 470,415.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    612,828.90 : 845,683.65 = 340,889.22 : x
  2. Step 2: Convert to fraction form
    612,828.90/845,683.65 = 340,889.22/x
  3. Step 3: Cross multiply
    612,828.90x = 845,683.65 × 340,889.22
  4. Step 4: Simplify right side
    612,828.90x = 288,284,439,815.25
  5. Step 5: Solve for x
    x = 288,284,439,815.25/612,828.90
  6. Step 6: Final answer
    x = 470,415.87

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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.