Home / 1,989,790.48-2,985,111.96-642,030.16

Finding the Fourth Proportional to 1,989,790.48, 2,985,111.96 and 642,030.16

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Solution

The fourth proportional to 1,989,790.48, 2,985,111.96 and 642,030.16 is: 963,182.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,989,790.48 : 2,985,111.96 = 642,030.16 : x
  2. Step 2: Convert to fraction form
    1,989,790.48/2,985,111.96 = 642,030.16/x
  3. Step 3: Cross multiply
    1,989,790.48x = 2,985,111.96 × 642,030.16
  4. Step 4: Simplify right side
    1,989,790.48x = 1,916,531,909,296.71
  5. Step 5: Solve for x
    x = 1,916,531,909,296.71/1,989,790.48
  6. Step 6: Final answer
    x = 963,182.77

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.