Home / 287,726,673-420,666,459

Finding the Third Proportional to 287,726,673 and 420,666,459

Calculator

Solution

The third proportional to 287,726,673 and 420,666,459 is: 615,029,075.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,726,673 : 420,666,459 = 420,666,459 : x
  2. Step 2: Convert to fraction form
    287,726,673/420,666,459 = 420,666,459/x
  3. Step 3: Cross multiply
    287,726,673x = 420,666,459 × 420,666,459
  4. Step 4: Simplify right side
    287,726,673x = 176,960,269,727,598,688
  5. Step 5: Solve for x
    x = 176,960,269,727,598,688/287,726,673
  6. Step 6: Final answer
    x = 615,029,075.62

Related Problems

Find third proportional to 143,863,336.50 and 210,333,229.50
Half scale
Find third proportional to 575,453,346 and 841,332,918
Double scale
Find third proportional to 287,726,675 and 420,666,462
Similar ratio
Find third proportional to 431,590,009.50 and 630,999,688.50
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.46) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.