Home / 830,075.10-1,246,279.05-515,147.10

Finding the Fourth Proportional to 830,075.10, 1,246,279.05 and 515,147.10

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Solution

The fourth proportional to 830,075.10, 1,246,279.05 and 515,147.10 is: 773,444.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    830,075.10 : 1,246,279.05 = 515,147.10 : x
  2. Step 2: Convert to fraction form
    830,075.10/1,246,279.05 = 515,147.10/x
  3. Step 3: Cross multiply
    830,075.10x = 1,246,279.05 × 515,147.10
  4. Step 4: Simplify right side
    830,075.10x = 642,017,038,398.26
  5. Step 5: Solve for x
    x = 642,017,038,398.26/830,075.10
  6. Step 6: Final answer
    x = 773,444.52

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Half scale
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Double scale
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Similar ratio
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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.