Home / 661,400,055.63-912,267,384.78-435,266,991.51

Finding the Fourth Proportional to 661,400,055.63, 912,267,384.78 and 435,266,991.51

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Solution

The fourth proportional to 661,400,055.63, 912,267,384.78 and 435,266,991.51 is: 600,362,634.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    661,400,055.63 : 912,267,384.78 = 435,266,991.51 : x
  2. Step 2: Convert to fraction form
    661,400,055.63/912,267,384.78 = 435,266,991.51/x
  3. Step 3: Cross multiply
    661,400,055.63x = 912,267,384.78 × 435,266,991.51
  4. Step 4: Simplify right side
    661,400,055.63x = 397,079,880,025,886,144
  5. Step 5: Solve for x
    x = 397,079,880,025,886,144/661,400,055.63
  6. Step 6: Final answer
    x = 600,362,634.76

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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.