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Finding the Fourth Proportional to 771,661.86, 1,064,881.80 and 427,497.06

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Solution

The fourth proportional to 771,661.86, 1,064,881.80 and 427,497.06 is: 589,939.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    771,661.86 : 1,064,881.80 = 427,497.06 : x
  2. Step 2: Convert to fraction form
    771,661.86/1,064,881.80 = 427,497.06/x
  3. Step 3: Cross multiply
    771,661.86x = 1,064,881.80 × 427,497.06
  4. Step 4: Simplify right side
    771,661.86x = 455,233,838,747.51
  5. Step 5: Solve for x
    x = 455,233,838,747.51/771,661.86
  6. Step 6: Final answer
    x = 589,939.53

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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.