Home / 921,218.51-1,271,376.13-553,814.58

Finding the Fourth Proportional to 921,218.51, 1,271,376.13 and 553,814.58

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Solution

The fourth proportional to 921,218.51, 1,271,376.13 and 553,814.58 is: 764,320.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    921,218.51 : 1,271,376.13 = 553,814.58 : x
  2. Step 2: Convert to fraction form
    921,218.51/1,271,376.13 = 553,814.58/x
  3. Step 3: Cross multiply
    921,218.51x = 1,271,376.13 × 553,814.58
  4. Step 4: Simplify right side
    921,218.51x = 704,106,638,462.87
  5. Step 5: Solve for x
    x = 704,106,638,462.87/921,218.51
  6. Step 6: Final answer
    x = 764,320.99

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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.