Home / 715,477.02-1,072,887.69-427,420.86

Finding the Fourth Proportional to 715,477.02, 1,072,887.69 and 427,420.86

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Solution

The fourth proportional to 715,477.02, 1,072,887.69 and 427,420.86 is: 640,935.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    715,477.02 : 1,072,887.69 = 427,420.86 : x
  2. Step 2: Convert to fraction form
    715,477.02/1,072,887.69 = 427,420.86/x
  3. Step 3: Cross multiply
    715,477.02x = 1,072,887.69 × 427,420.86
  4. Step 4: Simplify right side
    715,477.02x = 458,574,579,143.21
  5. Step 5: Solve for x
    x = 458,574,579,143.21/715,477.02
  6. Step 6: Final answer
    x = 640,935.44

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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.