Home / 779,985.48-1,075,339.08-619,372.20

Finding the Fourth Proportional to 779,985.48, 1,075,339.08 and 619,372.20

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Solution

The fourth proportional to 779,985.48, 1,075,339.08 and 619,372.20 is: 853,907.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    779,985.48 : 1,075,339.08 = 619,372.20 : x
  2. Step 2: Convert to fraction form
    779,985.48/1,075,339.08 = 619,372.20/x
  3. Step 3: Cross multiply
    779,985.48x = 1,075,339.08 × 619,372.20
  4. Step 4: Simplify right side
    779,985.48x = 666,035,131,725.58
  5. Step 5: Solve for x
    x = 666,035,131,725.58/779,985.48
  6. Step 6: Final answer
    x = 853,907.09

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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.