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Finding the Fourth Proportional to 692,034.72, 955,040.64 and 390,222.24

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Solution

The fourth proportional to 692,034.72, 955,040.64 and 390,222.24 is: 538,525.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    692,034.72 : 955,040.64 = 390,222.24 : x
  2. Step 2: Convert to fraction form
    692,034.72/955,040.64 = 390,222.24/x
  3. Step 3: Cross multiply
    692,034.72x = 955,040.64 × 390,222.24
  4. Step 4: Simplify right side
    692,034.72x = 372,678,097,831.83
  5. Step 5: Solve for x
    x = 372,678,097,831.83/692,034.72
  6. Step 6: Final answer
    x = 538,525.14

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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.