Home / 690,621.90-952,931.88-384,690.48

Finding the Fourth Proportional to 690,621.90, 952,931.88 and 384,690.48

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Solution

The fourth proportional to 690,621.90, 952,931.88 and 384,690.48 is: 530,802.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    690,621.90 : 952,931.88 = 384,690.48 : x
  2. Step 2: Convert to fraction form
    690,621.90/952,931.88 = 384,690.48/x
  3. Step 3: Cross multiply
    690,621.90x = 952,931.88 × 384,690.48
  4. Step 4: Simplify right side
    690,621.90x = 366,583,822,324.50
  5. Step 5: Solve for x
    x = 366,583,822,324.50/690,621.90
  6. Step 6: Final answer
    x = 530,802.49

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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.