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Finding the Fourth Proportional to 604,055.40, 908,051.40 and 427,783.20

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Solution

The fourth proportional to 604,055.40, 908,051.40 and 427,783.20 is: 643,068.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    604,055.40 : 908,051.40 = 427,783.20 : x
  2. Step 2: Convert to fraction form
    604,055.40/908,051.40 = 427,783.20/x
  3. Step 3: Cross multiply
    604,055.40x = 908,051.40 × 427,783.20
  4. Step 4: Simplify right side
    604,055.40x = 388,449,133,656.48
  5. Step 5: Solve for x
    x = 388,449,133,656.48/604,055.40
  6. Step 6: Final answer
    x = 643,068.72

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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.