Home / 628,020.84-866,223.14-385,985.64

Finding the Fourth Proportional to 628,020.84, 866,223.14 and 385,985.64

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Solution

The fourth proportional to 628,020.84, 866,223.14 and 385,985.64 is: 532,386.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    628,020.84 : 866,223.14 = 385,985.64 : x
  2. Step 2: Convert to fraction form
    628,020.84/866,223.14 = 385,985.64/x
  3. Step 3: Cross multiply
    628,020.84x = 866,223.14 × 385,985.64
  4. Step 4: Simplify right side
    628,020.84x = 334,349,693,075.71
  5. Step 5: Solve for x
    x = 334,349,693,075.71/628,020.84
  6. Step 6: Final answer
    x = 532,386.30

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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.