Home / 1,128,005.40-1,556,636.76-618,709.80

Finding the Fourth Proportional to 1,128,005.40, 1,556,636.76 and 618,709.80

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Solution

The fourth proportional to 1,128,005.40, 1,556,636.76 and 618,709.80 is: 853,813.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,128,005.40 : 1,556,636.76 = 618,709.80 : x
  2. Step 2: Convert to fraction form
    1,128,005.40/1,556,636.76 = 618,709.80/x
  3. Step 3: Cross multiply
    1,128,005.40x = 1,556,636.76 × 618,709.80
  4. Step 4: Simplify right side
    1,128,005.40x = 963,106,418,452.25
  5. Step 5: Solve for x
    x = 963,106,418,452.25/1,128,005.40
  6. Step 6: Final answer
    x = 853,813.66

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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.