Home / 1,129,656.72-1,558,937.28-620,370

Finding the Fourth Proportional to 1,129,656.72, 1,558,937.28 and 620,370

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Solution

The fourth proportional to 1,129,656.72, 1,558,937.28 and 620,370 is: 856,116.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,129,656.72 : 1,558,937.28 = 620,370 : x
  2. Step 2: Convert to fraction form
    1,129,656.72/1,558,937.28 = 620,370/x
  3. Step 3: Cross multiply
    1,129,656.72x = 1,558,937.28 × 620,370
  4. Step 4: Simplify right side
    1,129,656.72x = 967,117,920,393.60
  5. Step 5: Solve for x
    x = 967,117,920,393.60/1,129,656.72
  6. Step 6: Final answer
    x = 856,116.64

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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.