Home / 689,075.10-1,031,644.35-618,216.30

Finding the Fourth Proportional to 689,075.10, 1,031,644.35 and 618,216.30

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Solution

The fourth proportional to 689,075.10, 1,031,644.35 and 618,216.30 is: 925,558.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    689,075.10 : 1,031,644.35 = 618,216.30 : x
  2. Step 2: Convert to fraction form
    689,075.10/1,031,644.35 = 618,216.30/x
  3. Step 3: Cross multiply
    689,075.10x = 1,031,644.35 × 618,216.30
  4. Step 4: Simplify right side
    689,075.10x = 637,779,352,972.91
  5. Step 5: Solve for x
    x = 637,779,352,972.91/689,075.10
  6. Step 6: Final answer
    x = 925,558.55

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.