Home / 515,619,457.66-711,572,038.92-289,598,271.58

Finding the Fourth Proportional to 515,619,457.66, 711,572,038.92 and 289,598,271.58

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Solution

The fourth proportional to 515,619,457.66, 711,572,038.92 and 289,598,271.58 is: 399,655,268.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    515,619,457.66 : 711,572,038.92 = 289,598,271.58 : x
  2. Step 2: Convert to fraction form
    515,619,457.66/711,572,038.92 = 289,598,271.58/x
  3. Step 3: Cross multiply
    515,619,457.66x = 711,572,038.92 × 289,598,271.58
  4. Step 4: Simplify right side
    515,619,457.66x = 206,070,032,575,888,480
  5. Step 5: Solve for x
    x = 206,070,032,575,888,480/515,619,457.66
  6. Step 6: Final answer
    x = 399,655,268.08

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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.