Home / 380,890,100,417.91-525,628,424,373.84-209,612,031,907.41

Finding the Fourth Proportional to 380,890,100,417.91, 525,628,424,373.84 and 209,612,031,907.41

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Solution

The fourth proportional to 380,890,100,417.91, 525,628,424,373.84 and 209,612,031,907.41 is: 289,264,651,248.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    380,890,100,417.91 : 525,628,424,373.84 = 209,612,031,907.41 : x
  2. Step 2: Convert to fraction form
    380,890,100,417.91/525,628,424,373.84 = 209,612,031,907.41/x
  3. Step 3: Cross multiply
    380,890,100,417.91x = 525,628,424,373.84 × 209,612,031,907.41
  4. Step 4: Simplify right side
    380,890,100,417.91x = 110,178,042,061,290,997,809,152
  5. Step 5: Solve for x
    x = 110,178,042,061,290,997,809,152/380,890,100,417.91
  6. Step 6: Final answer
    x = 289,264,651,248.23

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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.