Home / 644,916.40-966,913.80-289,639.60

Finding the Fourth Proportional to 644,916.40, 966,913.80 and 289,639.60

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Solution

The fourth proportional to 644,916.40, 966,913.80 and 289,639.60 is: 434,252.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    644,916.40 : 966,913.80 = 289,639.60 : x
  2. Step 2: Convert to fraction form
    644,916.40/966,913.80 = 289,639.60/x
  3. Step 3: Cross multiply
    644,916.40x = 966,913.80 × 289,639.60
  4. Step 4: Simplify right side
    644,916.40x = 280,056,526,266.48
  5. Step 5: Solve for x
    x = 280,056,526,266.48/644,916.40
  6. Step 6: Final answer
    x = 434,252.45

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.