Home / 779,678.40-1,075,944.56-435,519.12

Finding the Fourth Proportional to 779,678.40, 1,075,944.56 and 435,519.12

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Solution

The fourth proportional to 779,678.40, 1,075,944.56 and 435,519.12 is: 601,009.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    779,678.40 : 1,075,944.56 = 435,519.12 : x
  2. Step 2: Convert to fraction form
    779,678.40/1,075,944.56 = 435,519.12/x
  3. Step 3: Cross multiply
    779,678.40x = 1,075,944.56 × 435,519.12
  4. Step 4: Simplify right side
    779,678.40x = 468,594,427,939.99
  5. Step 5: Solve for x
    x = 468,594,427,939.99/779,678.40
  6. Step 6: Final answer
    x = 601,009.89

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Double scale
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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.