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Finding the Fourth Proportional to 692,783.01, 955,768.55 and 402,345.14

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Solution

The fourth proportional to 692,783.01, 955,768.55 and 402,345.14 is: 555,078.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    692,783.01 : 955,768.55 = 402,345.14 : x
  2. Step 2: Convert to fraction form
    692,783.01/955,768.55 = 402,345.14/x
  3. Step 3: Cross multiply
    692,783.01x = 955,768.55 × 402,345.14
  4. Step 4: Simplify right side
    692,783.01x = 384,548,824,266.78
  5. Step 5: Solve for x
    x = 384,548,824,266.78/692,783.01
  6. Step 6: Final answer
    x = 555,078.31

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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.