Home / 1,139,025,681.51-1,571,843,859.81-630,389,387.22

Finding the Fourth Proportional to 1,139,025,681.51, 1,571,843,859.81 and 630,389,387.22

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Solution

The fourth proportional to 1,139,025,681.51, 1,571,843,859.81 and 630,389,387.22 is: 869,930,945.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,139,025,681.51 : 1,571,843,859.81 = 630,389,387.22 : x
  2. Step 2: Convert to fraction form
    1,139,025,681.51/1,571,843,859.81 = 630,389,387.22/x
  3. Step 3: Cross multiply
    1,139,025,681.51x = 1,571,843,859.81 × 630,389,387.22
  4. Step 4: Simplify right side
    1,139,025,681.51x = 990,873,687,587,319,808
  5. Step 5: Solve for x
    x = 990,873,687,587,319,808/1,139,025,681.51
  6. Step 6: Final answer
    x = 869,930,945.08

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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.