Home / 780,054.48-1,075,434.30-619,441.20

Finding the Fourth Proportional to 780,054.48, 1,075,434.30 and 619,441.20

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Solution

The fourth proportional to 780,054.48, 1,075,434.30 and 619,441.20 is: 854,002.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    780,054.48 : 1,075,434.30 = 619,441.20 : x
  2. Step 2: Convert to fraction form
    780,054.48/1,075,434.30 = 619,441.20/x
  3. Step 3: Cross multiply
    780,054.48x = 1,075,434.30 × 619,441.20
  4. Step 4: Simplify right side
    780,054.48x = 666,168,313,313.16
  5. Step 5: Solve for x
    x = 666,168,313,313.16/780,054.48
  6. Step 6: Final answer
    x = 854,002.29

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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.