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Finding the Fourth Proportional to 556,878.72, 768,484.80 and 302,223.36

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Solution

The fourth proportional to 556,878.72, 768,484.80 and 302,223.36 is: 417,063.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    556,878.72 : 768,484.80 = 302,223.36 : x
  2. Step 2: Convert to fraction form
    556,878.72/768,484.80 = 302,223.36/x
  3. Step 3: Cross multiply
    556,878.72x = 768,484.80 × 302,223.36
  4. Step 4: Simplify right side
    556,878.72x = 232,254,058,364.93
  5. Step 5: Solve for x
    x = 232,254,058,364.93/556,878.72
  6. Step 6: Final answer
    x = 417,063.99

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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.