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Finding the Fourth Proportional to 673,448.88, 929,702.30 and 520,142.93

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Solution

The fourth proportional to 673,448.88, 929,702.30 and 520,142.93 is: 718,062.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    673,448.88 : 929,702.30 = 520,142.93 : x
  2. Step 2: Convert to fraction form
    673,448.88/929,702.30 = 520,142.93/x
  3. Step 3: Cross multiply
    673,448.88x = 929,702.30 × 520,142.93
  4. Step 4: Simplify right side
    673,448.88x = 483,578,071,100.51
  5. Step 5: Solve for x
    x = 483,578,071,100.51/673,448.88
  6. Step 6: Final answer
    x = 718,062.03

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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.