Home / 1,243,219,428.54-1,715,632,289.01-686,290,518.18

Finding the Fourth Proportional to 1,243,219,428.54, 1,715,632,289.01 and 686,290,518.18

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Solution

The fourth proportional to 1,243,219,428.54, 1,715,632,289.01 and 686,290,518.18 is: 947,075,106.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,243,219,428.54 : 1,715,632,289.01 = 686,290,518.18 : x
  2. Step 2: Convert to fraction form
    1,243,219,428.54/1,715,632,289.01 = 686,290,518.18/x
  3. Step 3: Cross multiply
    1,243,219,428.54x = 1,715,632,289.01 × 686,290,518.18
  4. Step 4: Simplify right side
    1,243,219,428.54x = 1,177,422,172,631,012,352
  5. Step 5: Solve for x
    x = 1,177,422,172,631,012,352/1,243,219,428.54
  6. Step 6: Final answer
    x = 947,075,106.45

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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.