Home / 7,185,090.78-9,913,945.13-4,128,714.54

Finding the Fourth Proportional to 7,185,090.78, 9,913,945.13 and 4,128,714.54

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Solution

The fourth proportional to 7,185,090.78, 9,913,945.13 and 4,128,714.54 is: 5,696,775.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,185,090.78 : 9,913,945.13 = 4,128,714.54 : x
  2. Step 2: Convert to fraction form
    7,185,090.78/9,913,945.13 = 4,128,714.54/x
  3. Step 3: Cross multiply
    7,185,090.78x = 9,913,945.13 × 4,128,714.54
  4. Step 4: Simplify right side
    7,185,090.78x = 40,931,849,386,349.62
  5. Step 5: Solve for x
    x = 40,931,849,386,349.62/7,185,090.78
  6. Step 6: Final answer
    x = 5,696,775.54

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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.