Home / 1,020,328.72-1,407,673.32-638,210.32

Finding the Fourth Proportional to 1,020,328.72, 1,407,673.32 and 638,210.32

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Solution

The fourth proportional to 1,020,328.72, 1,407,673.32 and 638,210.32 is: 880,492.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,020,328.72 : 1,407,673.32 = 638,210.32 : x
  2. Step 2: Convert to fraction form
    1,020,328.72/1,407,673.32 = 638,210.32/x
  3. Step 3: Cross multiply
    1,020,328.72x = 1,407,673.32 × 638,210.32
  4. Step 4: Simplify right side
    1,020,328.72x = 898,391,640,012.66
  5. Step 5: Solve for x
    x = 898,391,640,012.66/1,020,328.72
  6. Step 6: Final answer
    x = 880,492.36

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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.